{"id":"EM-20261103-C5MB","url":"https://cyber.eventmonitor.net/incident/EM-20261103-C5MB/","type":"cve","title":"FreeRDP Vulnerability (CVE-2026-121393)","subtitle":"CVE-2026-121393","subject":"CVE-2026-121393","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-03T15:17:26.917Z","firstSignal":"2026-11-03T14:27:58.000Z","lastSignal":"2026-11-03T15:17:26.917Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-03T15:17:26.917Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-03T15:17:26.917Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T14:27:58.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-03T15:17:26.917Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261103-C5MB created."},{"at":"2026-11-03T15:17:26.917Z","what":"Severity raised to High by C6"}],"stages":[{"name":"Disclosed","at":"2026-11-03T15:17:26.917Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-03T15:17:26.917Z","detail":"CVSS 7.1 · EPSS 0.4%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T14:27:58.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T14:27:58.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":2,"title":"Red Hat: CVE-2026-121393 (moderate)","text":"freerdp: freerdp: Denial of Service via crafted RemoteFX region coordinates","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-121393.json"},{"at":"2026-11-03T15:17:26.917Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-121393 (CVSS 7.1)","text":"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.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121393"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-03T15:17:26.917","score":7.1,"severity":"HIGH","desc":"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 l","product":"Freerdp","seen":1793803438877},"kev":null,"epss":{"epss":0.00358,"pct":0.29729,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}