{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49759","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","state":"PUBLISHED","assignerShortName":"EEF","dateReserved":"2026-06-01T13:45:22.449Z","datePublished":"2026-06-10T14:35:38.838Z","dateUpdated":"2026-07-01T04:45:31.080Z"},"containers":{"cna":{"affected":[{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unknown","modules":["inet_drv"],"packageName":"erts","packageURL":"pkg:otp/erts?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["emulator/drivers/common/inet_drv.c"],"programRoutines":[{"name":"sctp_parse_error_chunk"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"15.2.7.9","status":"unaffected"},{"at":"16.4.0.2","status":"unaffected"},{"at":"17.0.2","status":"unaffected"}],"lessThan":"*","status":"affected","version":"6.0","versionType":"otp"}]},{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unknown","modules":["inet_drv"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["erts/emulator/drivers/common/inet_drv.c"],"programRoutines":[{"name":"sctp_parse_error_chunk"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"27.3.4.13","status":"unaffected"},{"at":"28.5.0.2","status":"unaffected"},{"at":"29.0.2","status":"unaffected"}],"lessThan":"*","status":"affected","version":"17.0","versionType":"otp"},{"lessThan":"3983d495284331c121f600a80bac9fcf4e16381e","status":"affected","version":"84adefa331c4159d432d22840663c38f155cd4c1","versionType":"git"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"SCTP support must be compiled into OTP. A listening SCTP socket must be opened via <tt>gen_sctp</tt> with the default <tt>inet</tt> backend and must be reachable from the attacker's network. Windows builds are unaffected as SCTP is not supported on Windows."}],"value":"SCTP support must be compiled into OTP. A listening SCTP socket must be opened via gen_sctp with the default inet backend and must be reachable from the attacker's network. Windows builds are unaffected as SCTP is not supported on Windows."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","versionEndExcluding":"27.3.4.13","versionStartIncluding":"17.0","vulnerable":true},{"criteria":"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","versionEndExcluding":"28.5.0.2","versionStartIncluding":"28.0","vulnerable":true},{"criteria":"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","versionEndExcluding":"29.0.2","versionStartIncluding":"29.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Zhang Delong"},{"lang":"en","type":"remediation developer","value":"Raimo Niskanen"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Stack-based Buffer Overflow vulnerability in Erlang OTP <tt>erts</tt> (<tt>inet_drv</tt>) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.<p>The <tt>sctp_parse_error_chunk</tt> function in <tt>erts/emulator/drivers/common/inet_drv.c</tt> parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated <tt>ErlDrvTermData spec[]</tt> array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.</p><p>A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.</p><p>This issue affects OTP from OTP 17.0 before 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2 and 17.0.2.</p>"}],"value":"Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP 17.0 before 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2 and 17.0.2."}],"impacts":[{"capecId":"CAPEC-100","descriptions":[{"lang":"en","value":"CAPEC-100 Overflow Buffers"}]}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF","dateUpdated":"2026-07-01T04:45:31.080Z"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97"},{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-49759.html"},{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-49759"},{"tags":["x_version-scheme"],"url":"https://www.erlang.org/doc/system/versions.html#order-of-versions"},{"tags":["patch"],"url":"https://github.com/erlang/otp/commit/3983d495284331c121f600a80bac9fcf4e16381e"}],"source":{"discovery":"EXTERNAL"},"title":"Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash","x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-10T16:18:27.945916Z","id":"CVE-2026-49759","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-06-10T16:18:43.800Z"}},{"affected":[{"cpes":["cpe:/a:redhat:openstack:16.2"],"defaultStatus":"unaffected","product":"Red Hat OpenStack Platform 16.2","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openstack:17.1"],"defaultStatus":"unaffected","product":"Red Hat OpenStack Platform 17.1","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:openstack:18.0"],"defaultStatus":"unaffected","product":"Red Hat OpenStack Platform 18.0","vendor":"Red Hat"}],"datePublic":"2026-06-10T14:35:38.838Z","descriptions":[{"lang":"en","value":"A flaw was found in Erlang OTP (Open Telecom Platform) erts, specifically within the `inet_drv` component. An unauthenticated remote attacker can exploit a stack-based buffer overflow vulnerability by sending a specially crafted Stream Control Transmission Protocol (SCTP) ERROR chunk. This can lead to a Denial of Service (DoS) by crashing the BEAM virtual machine. Additionally, this flaw may result in limited information disclosure by leaking small portions of Erlang VM memory."}],"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":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-49759"},{"name":"RHBZ#2487607","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487607"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49759.json"}],"timeline":[{"lang":"en","time":"2026-06-10T16:01:51.030Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-06-10T14:35:38.838Z","value":"Made public."}],"title":"erlang: Erlang OTP: Denial of Service via crafted SCTP ERROR chunk","x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:09:55.439Z"}}]}}