{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42010","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-04-23T11:23:46.517Z","datePublished":"2026-05-07T12:00:05.433Z","dateUpdated":"2026-07-08T12:06:09.705Z"},"containers":{"cna":{"title":"Gnutls: gnutls: authentication bypass via nul character in username","metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.8.10-4.el10_2","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.8.9-9.el10_0.19","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.16-8.el8_10.6","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:8::appstream","cpe:/o:redhat:enterprise_linux:8::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.16-8.el8_10.6","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:8::appstream","cpe:/o:redhat:enterprise_linux:8::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.14-10.el8_4.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream","cpe:/a:redhat:rhel_eus_long_life:8.4::appstream","cpe:/o:redhat:rhel_aus:8.4::baseos","cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libtasn1","defaultStatus":"affected","versions":[{"version":"0:4.13-3.el8_4.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream","cpe:/a:redhat:rhel_eus_long_life:8.4::appstream","cpe:/o:redhat:rhel_aus:8.4::baseos","cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.14-10.el8_4.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream","cpe:/a:redhat:rhel_eus_long_life:8.4::appstream","cpe:/o:redhat:rhel_aus:8.4::baseos","cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libtasn1","defaultStatus":"affected","versions":[{"version":"0:4.13-3.el8_4.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream","cpe:/a:redhat:rhel_eus_long_life:8.4::appstream","cpe:/o:redhat:rhel_aus:8.4::baseos","cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.16-5.el8_6.5","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.6::appstream","cpe:/a:redhat:rhel_eus_long_life:8.6::appstream","cpe:/o:redhat:rhel_aus:8.6::baseos","cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libtasn1","defaultStatus":"affected","versions":[{"version":"0:4.13-3.el8_6.2","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.6::appstream","cpe:/a:redhat:rhel_eus_long_life:8.6::appstream","cpe:/o:redhat:rhel_aus:8.6::baseos","cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.16-5.el8_6.5","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.6::appstream","cpe:/a:redhat:rhel_eus_long_life:8.6::appstream","cpe:/o:redhat:rhel_aus:8.6::baseos","cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libtasn1","defaultStatus":"affected","versions":[{"version":"0:4.13-3.el8_6.2","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_aus:8.6::appstream","cpe:/a:redhat:rhel_eus_long_life:8.6::appstream","cpe:/o:redhat:rhel_aus:8.6::baseos","cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.8 Telecommunications Update Service","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.16-7.el8_8.4","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:8.8::appstream","cpe:/a:redhat:rhel_tus:8.8::appstream","cpe:/o:redhat:rhel_e4s:8.8::baseos","cpe:/o:redhat:rhel_tus:8.8::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.8 Telecommunications Update Service","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libtasn1","defaultStatus":"affected","versions":[{"version":"0:4.13-4.el8_8.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:8.8::appstream","cpe:/a:redhat:rhel_tus:8.8::appstream","cpe:/o:redhat:rhel_e4s:8.8::baseos","cpe:/o:redhat:rhel_tus:8.8::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.6.16-7.el8_8.4","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:8.8::appstream","cpe:/a:redhat:rhel_tus:8.8::appstream","cpe:/o:redhat:rhel_e4s:8.8::baseos","cpe:/o:redhat:rhel_tus:8.8::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"libtasn1","defaultStatus":"affected","versions":[{"version":"0:4.13-4.el8_8.1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:8.8::appstream","cpe:/a:redhat:rhel_tus:8.8::appstream","cpe:/o:redhat:rhel_e4s:8.8::baseos","cpe:/o:redhat:rhel_tus:8.8::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.8.10-4.el9_8","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.8.10-4.el9_8","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream","cpe:/o:redhat:enterprise_linux:9::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.8.3-4.el9_4.6","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_e4s:9.4::appstream","cpe:/o:redhat:rhel_e4s:9.4::baseos"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"affected","versions":[{"version":"0:3.8.3-6.el9_6.4","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream","cpe:/o:redhat:rhel_eus:9.6::baseos"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.20","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"4.20.9.6.202607010620-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.20::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.21","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"4.21.9.6.202607011303-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.21::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4.22","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhcos","defaultStatus":"affected","versions":[{"version":"4.22.9.8.202606301732-0","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:openshift:4.22::el9"]},{"vendor":"Red Hat","product":"Red Hat AI Inference Server 3.2","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhaiis/model-opt-cuda-rhel9","defaultStatus":"affected","versions":[{"version":"1782951051","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:ai_inference_server:3.2::el9"]},{"vendor":"Red Hat","product":"Red Hat AI Inference Server 3.2","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhaiis/vllm-cuda-rhel9","defaultStatus":"affected","versions":[{"version":"1782951012","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:ai_inference_server:3.2::el9"]},{"vendor":"Red Hat","product":"Red Hat AI Inference Server 3.2","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhaiis/vllm-rocm-rhel9","defaultStatus":"affected","versions":[{"version":"1782951244","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:ai_inference_server:3.2::el9"]},{"vendor":"Red Hat","product":"Red Hat Discovery 2","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"discovery/discovery-server-rhel9","defaultStatus":"affected","versions":[{"version":"1782159791","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:discovery:2::el9"]},{"vendor":"Red Hat","product":"Red Hat Discovery 2","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"discovery/discovery-ui-rhel9","defaultStatus":"affected","versions":[{"version":"1782166952","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:discovery:2::el9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"gnutls-main","defaultStatus":"affected","versions":[{"version":"3.8.13-1.hum1","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhui5/cds-rhel9","defaultStatus":"affected","versions":[{"version":"1781525684","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhui:5::el9"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhui5/haproxy-rhel9","defaultStatus":"affected","versions":[{"version":"1781525671","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhui:5::el9"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhui5/installer-rhel9","defaultStatus":"affected","versions":[{"version":"1781525693","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhui:5::el9"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","collectionURL":"https://catalog.redhat.com/software/containers/","packageName":"rhui5/rhua-rhel9","defaultStatus":"affected","versions":[{"version":"1781525739","lessThan":"*","versionType":"rpm","status":"unaffected"}],"cpes":["cpe:/a:redhat:rhui:5::el9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gnutls","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:13274","name":"RHSA-2026:13274","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:20611","name":"RHSA-2026:20611","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:20612","name":"RHSA-2026:20612","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:20613","name":"RHSA-2026:20613","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:26319","name":"RHSA-2026:26319","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:26409","name":"RHSA-2026:26409","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:29197","name":"RHSA-2026:29197","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:30004","name":"RHSA-2026:30004","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:30849","name":"RHSA-2026:30849","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:30850","name":"RHSA-2026:30850","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:32962","name":"RHSA-2026:32962","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:33125","name":"RHSA-2026:33125","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:34764","name":"RHSA-2026:34764","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:34788","name":"RHSA-2026:34788","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:34790","name":"RHSA-2026:34790","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:36004","name":"RHSA-2026:36004","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:36005","name":"RHSA-2026:36005","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:36006","name":"RHSA-2026:36006","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-42010","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467289","name":"RHBZ#2467289","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-4"}],"datePublic":"2026-04-29T00:00:00.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-170","description":"Improper Null Termination","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-170: Improper Null Termination","timeline":[{"lang":"en","time":"2026-05-06T16:57:37.044Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-04-29T00:00:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Joshua Rogers (AISLE Research Team) for reporting this issue."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-07-07T18:26:38.535Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-626","lang":"en","description":"CWE-626 Null Byte Interaction Error (Poison Null Byte)"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-07T13:47:12.364306Z","id":"CVE-2026-42010","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-07T13:47:17.179Z"}},{"affected":[{"cpes":["cpe:/a:redhat:openshift:4.20::el9"],"defaultStatus":"affected","product":"Red Hat OpenShift Container Platform 4.20","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift:4.21::el9"],"defaultStatus":"affected","product":"Red Hat OpenShift Container Platform 4.21","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openshift:4.22::el9"],"defaultStatus":"affected","product":"Red Hat OpenShift Container Platform 4.22","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:8::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_aus:8.4::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream AUS (v.8.4)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_aus:8.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream AUS (v.8.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_e4s:8.8::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.8.8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_tus:8.8::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream TUS (v.8.8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_e4s:9.4::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.9.4)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:9::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:8::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_aus:8.4::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS AUS (v.8.4)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_aus:8.6::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS AUS (v.8.6)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_e4s:8.8::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS E4S (v.8.8)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_tus:8.8::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS TUS (v.8.8)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_e4s:9.4::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS E4S (v.9.4)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:rhel_eus:9.6::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:9::baseos"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux BaseOS (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:ai_inference_server:3.2::el9"],"defaultStatus":"affected","product":"Red Hat AI Inference Server 3.2","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:discovery:2::el9"],"defaultStatus":"affected","product":"Red Hat Discovery 2","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","product":"Red Hat Hardened Images","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhui:5::el9"],"defaultStatus":"affected","product":"Red Hat Update Infrastructure 5","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"unaffected","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}],"datePublic":"2026-04-29T00:00:00.000Z","descriptions":[{"lang":"en","value":"A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-170","description":"Improper Null Termination","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-42010"},{"name":"RHBZ#2467289","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2467289"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42010.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:34788"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:34764"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:34790"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:26409"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:20613"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:20611"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:33125"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:30849"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:30850"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:32962"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:30004"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:20612"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:36004"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:36005"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:36006"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:29197"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:13274"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:26319"}],"solutions":[{"lang":"en","value":"RHSA-2026:34788: Red Hat OpenShift Container Platform 4.20"},{"lang":"en","value":"RHSA-2026:34764: Red Hat OpenShift Container Platform 4.21"},{"lang":"en","value":"RHSA-2026:34790: Red Hat OpenShift Container Platform 4.22"},{"lang":"en","value":"RHSA-2026:26409: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0)"},{"lang":"en","value":"RHSA-2026:20613: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10)"},{"lang":"en","value":"RHSA-2026:20611: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux BaseOS (v. 8)"},{"lang":"en","value":"RHSA-2026:33125: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4), Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)"},{"lang":"en","value":"RHSA-2026:30849: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6), Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)"},{"lang":"en","value":"RHSA-2026:30850: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8), Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8)"},{"lang":"en","value":"RHSA-2026:32962: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4)"},{"lang":"en","value":"RHSA-2026:30004: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6)"},{"lang":"en","value":"RHSA-2026:20612: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9)"},{"lang":"en","value":"RHSA-2026:36004: Red Hat AI Inference Server 3.2"},{"lang":"en","value":"RHSA-2026:36005: Red Hat AI Inference Server 3.2"},{"lang":"en","value":"RHSA-2026:36006: Red Hat AI Inference Server 3.2"},{"lang":"en","value":"RHSA-2026:29197: Red Hat Discovery 2"},{"lang":"en","value":"RHSA-2026:13274: Red Hat Hardened Images"},{"lang":"en","value":"RHSA-2026:26319: Red Hat Update Infrastructure 5"}],"timeline":[{"lang":"en","time":"2026-05-06T16:57:37.044Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-04-29T00:00:00.000Z","value":"Made public."}],"title":"gnutls: gnutls: Authentication Bypass via NUL Character in Username","x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-07-08T12:06:09.705Z"}}]}}