{"id":"CVE-2026-121396","title":"FreeRDP 3.0.0 before 3.32.2 denial of service via RTS padding assertion","summary":"FreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a reachable assertion in rts_read_auth_verifier triggered by malformed RTS padding. Attackers controlling an RD Gateway can send a crafted RPC-over-HTTP…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-617"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP >= 3.0.0 < 3.32.2"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T17:52:02.362664Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T18:31:13.343Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121396","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6p3w-fv52-cf24","label":"GitHub Security Advisory (GHSA-6p3w-fv52-cf24)"},{"url":"https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-denial-of-service-via-rts-padding-assertion","label":"VulnCheck Advisory: FreeRDP 3.0.0 before 3.32.2 denial of service via RTS padding assertion"}],"tags":["cve.org"],"epss":0.00317,"epssPercentile":0.24735,"ingestedAt":"2026-11-05T20:33:06.361Z","slug":"CVE-2026-121396","body":"## Overview\n\nFreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a reachable assertion in rts_read_auth_verifier triggered by malformed RTS padding. Attackers controlling an RD Gateway can send a crafted RPC-over-HTTP RTS PDU with inconsistent authentication padding to abort the connecting client process.\n\n## Affected\n\n- `FreeRDP >= 3.0.0 < 3.32.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}