{"id":"CVE-2026-121393","title":"FreeRDP 3.0.0 before 3.32.2 Denial of Service via RemoteFX Region Assertion","summary":"FreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows malicious RDP servers to abort clients built with verbose WinPR assertions by sending crafted RemoteFX region rectangles. Attackers can supply a rect…","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 >= 3.0.0 < 3.32.2"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-03T16:01:46.540354Z"},"exploitAvailable":true,"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T16:02:13.454Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121393","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qw2-8h66-pvpw","label":"GitHub Security Advisory (GHSA-7qw2-8h66-pvpw)"},{"url":"https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-denial-of-service-via-remotefx-region-assertion","label":"VulnCheck Advisory: FreeRDP 3.0.0 before 3.32.2 Denial of Service via RemoteFX Region Assertion"}],"tags":["cve.org","exploit-available"],"epss":0.00358,"epssPercentile":0.2976,"ingestedAt":"2026-11-05T20:33:06.276Z","slug":"CVE-2026-121393","body":"## Overview\n\nFreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows malicious RDP servers to abort clients built with verbose WinPR assertions by sending crafted RemoteFX region rectangles. Attackers can supply a rectangle with x set to 65535 alongside a SurfaceBits destination left of 1, triggering a 16-bit coordinate assertion in rfx_process_message that terminates the 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":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}