{"id":"CVE-2026-109946","summary":"FreeRDP 3.11.0 before 3.32.0 Reachable Assertion via AVC444 Odd Region Width","details":"FreeRDP 3.11.0 before 3.32.0 does not validate that AVC444 and AVC444v2 region widths are even before YUV444 conversion, so an odd width reaches an assertion and aborts the client. A malicious or compromised RDP server can terminate a connected FreeRDP client after RDPGFX AVC444 negotiation by sending an in-bounds region rectangle with an odd width.","aliases":["GHSA-97pf-pwp3-2wrv"],"modified":"2026-10-14T02:48:21.362199261Z","published":"2026-10-13T13:27:13.792Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-617"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109946.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109946.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97pf-pwp3-2wrv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109946"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.0-reachable-assertion-via-avc444-odd-region-width"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"4312666c8f89cb5464fc6e79423d1d7e33683ebe"},{"fixed":"d27a4f7c1c63b62a5e60e5d939ad116cfb58ffc1"}],"database_specific":{"extracted_events":[{"introduced":"3.11.0"},{"fixed":"3.32.0"}],"source":"AFFECTED_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109946.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}