{"affected":[{"defaultStatus":"unaffected","product":"FreeRDP","source":"CNA: VulnCheck","vendor":"FreeRDP","versions":[{"lessThan":"3.32.2","status":"affected","version":"3.0.0","versionType":"semver"},{"status":"unaffected","version":"3.32.2","versionType":"semver"}]}],"cveId":"CVE-2026-121393","cwes":["CWE-617"],"description":"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 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.","epss":null,"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qw2-8h66-pvpw"}],"kev":null,"metrics":[{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":6.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793721733454,"publishedAt":1793716078525,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qw2-8h66-pvpw"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-denial-of-service-via-remotefx-region-assertion"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7qw2-8h66-pvpw"}],"remediation":[],"revision":"fdadf0e64b025c3f928656bfde72563c8aca8f58d0d29000bc4fe73b46f01e35","sources":[{"modifiedAt":1793721733454,"name":"CNA: VulnCheck","retrievedAt":1793725898315,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121393"}],"ssvc":{"assessedAt":1793721706540,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"FreeRDP 3.0.0 before 3.32.2 Denial of Service via RemoteFX Region Assertion","updatedAt":1793725898315}