{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33984","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-24T22:20:06.211Z","datePublished":"2026-03-30T21:42:57.090Z","dateUpdated":"2026-06-30T12:09:18.125Z"},"containers":{"cna":{"title":"FreeRDP: ClearCodec resize_vbar_entry() Heap OOB Write","problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-131","lang":"en","description":"CWE-131: Incorrect Calculation of Buffer Size","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8469-2xcx-frf6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8469-2xcx-frf6"},{"name":"https://github.com/FreeRDP/FreeRDP/commit/dc7fdb165095139be779a4000199bc1706b06ad5","tags":["x_refsource_MISC"],"url":"https://github.com/FreeRDP/FreeRDP/commit/dc7fdb165095139be779a4000199bc1706b06ad5"}],"affected":[{"vendor":"FreeRDP","product":"FreeRDP","versions":[{"version":"< 3.24.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-30T21:42:57.090Z"},"descriptions":[{"lang":"en","value":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2."}],"source":{"advisory":"GHSA-8469-2xcx-frf6","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-02T03:55:56.355506Z","id":"CVE-2026-33984","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-02T12:57:14.482Z"}},{"affected":[{"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:10.1","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:8.2::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream AUS (v. 8.2)","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_e4s:8.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.8.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_tus:8.6::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream TUS (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:9.0::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.9.0)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_e4s:9.2::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream E4S (v.9.2)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.4::appstream"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux AppStream EUS (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 CodeReady Linux Builder EUS (v. 10.0)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:10.1","cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:8::crb"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CRB (v. 8)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.4::crb"],"defaultStatus":"affected","product":"Red Hat CodeReady Linux Builder EUS (v.9.4)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:rhel_eus:9.6::crb"],"defaultStatus":"affected","product":"Red Hat CodeReady Linux Builder EUS (v.9.6)","vendor":"Red Hat"},{"cpes":["cpe:/a:redhat:enterprise_linux:9::crb"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"},{"cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}],"datePublic":"2026-03-30T21:42:57.090Z","descriptions":[{"lang":"en","value":"A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A remote attacker could exploit a heap buffer overflow vulnerability in the `resize_vbar_entry()` function. This occurs when an error in buffer resizing leads to attacker-controlled pixel data being written into an undersized memory buffer. Successful exploitation could result in arbitrary code execution."}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-131","description":"Incorrect Calculation of Buffer Size","lang":"en","type":"CWE"}]}],"references":[{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-33984"},{"name":"RHBZ#2453219","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453219"},{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33984.json"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:11333"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:8458"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:19033"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:8945"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:11651"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:11649"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:12388"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:12359"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:11332"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:11336"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:10709"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:9656"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:8457"},{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:19349"}],"solutions":[{"lang":"en","value":"RHSA-2026:11333: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"},{"lang":"en","value":"RHSA-2026:8458: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"},{"lang":"en","value":"RHSA-2026:19033: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"},{"lang":"en","value":"RHSA-2026:8945: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"},{"lang":"en","value":"RHSA-2026:11651: Red Hat Enterprise Linux AppStream AUS (v. 8.2)"},{"lang":"en","value":"RHSA-2026:11649: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"},{"lang":"en","value":"RHSA-2026:12388: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6)"},{"lang":"en","value":"RHSA-2026:12359: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"},{"lang":"en","value":"RHSA-2026:11332: Red Hat Enterprise Linux AppStream E4S (v.9.0)"},{"lang":"en","value":"RHSA-2026:11336: Red Hat Enterprise Linux AppStream E4S (v.9.2)"},{"lang":"en","value":"RHSA-2026:10709: Red Hat CodeReady Linux Builder EUS (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.4)"},{"lang":"en","value":"RHSA-2026:9656: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"},{"lang":"en","value":"RHSA-2026:8457: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"},{"lang":"en","value":"RHSA-2026:19349: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}],"timeline":[{"lang":"en","time":"2026-03-30T22:01:24.523Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-03-30T21:42:57.090Z","value":"Made public."}],"title":"FreeRDP: FreeRDP: Heap buffer overflow allows arbitrary code execution via crafted pixel data","workarounds":[{"lang":"en","value":"Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"},"providerMetadata":{"orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","shortName":"redhat-SADP","dateUpdated":"2026-06-30T12:09:18.125Z"}}]}}