{"id":"CVE-2026-121395","title":"FreeRDP 3.17.0 before 3.32.2 Denial of Service via RemoteFX Decoder","summary":"FreeRDP from 3.17.0 before 3.32.2 contains an assertion failure in the RemoteFX differential decoder when verbose WinPR assertions are enabled. A malicious RDP server can send a crafted RemoteFX tile with adjacent LL3 coefficients summin…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-617"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP >= 3.17.0 < 3.32.2"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T14:27:59.844Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121395","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cg4f-57hc-v7w7","label":"GitHub Security Advisory (GHSA-cg4f-57hc-v7w7)"},{"url":"https://www.vulncheck.com/advisories/freerdp-3.17.0-before-3.32.2-denial-of-service-via-remotefx-decoder","label":"VulnCheck Advisory: FreeRDP 3.17.0 before 3.32.2 Denial of Service via RemoteFX Decoder"}],"tags":["cve.org"],"epss":0.00254,"epssPercentile":0.17088,"ingestedAt":"2026-11-05T19:30:42.961Z","slug":"CVE-2026-121395","body":"## Overview\n\nFreeRDP from 3.17.0 before 3.32.2 contains an assertion failure in the RemoteFX differential decoder when verbose WinPR assertions are enabled. A malicious RDP server can send a crafted RemoteFX tile with adjacent LL3 coefficients summing beyond signed 16-bit range to abort the client process.\n\n## Affected\n\n- `FreeRDP >= 3.17.0 < 3.32.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}