CVE-2026-121951

FreeRDP 3.0.0 before 3.32.2 server-side RDP peer input parsing skips the six-byte body of a slow-path input event with an unknown message type without checking it lies within the packet's declared length, causing a WinPR stream assertion failure. A remote RDP client with an active session can send a truncated unknown input event to abort assertion-enabled server processes, causing denial of service.

• CWE-617

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qq4-qwxq-49m8Exploit, Mitigation, Vendor Advisory
• https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-denial-of-service-via-slow-path-input-eventThird Party Advisory
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qq4-qwxq-49m8Exploit, Mitigation, Vendor Advisory

Published

Nov 4, 2026

Last Modified

Nov 5, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-121944sngrep through 1.9.0 contains an infinite loop vulnerability…5.5
• CVE-2026-121945CoopCycle coopcycle-web before 6.20.1 contains a broken acce…7.6
• CVE-2026-121946zbateson mail-mime-parser before 3.0.9 and 4.x before 4.0.6 …7.2
• CVE-2026-121949The Symfony HtmlSanitizer component does not apply the media…5.4
• CVE-2026-12195myVesta is affected by an authenticated remote code executio…8.5
• CVE-2026-121950FreeRDP before 3.32.2 does not check the product of surface …6.5
• CVE-2026-121952FreeRDP before 3.32.2 has an out-of-bounds write in the prox…9.8
• CVE-2026-121953FreeRDP before 3.32.2 has a use-after-free in the client's r…9.8
• CVE-2026-121954FreeRDP before 3.32.2 has a heap out-of-bounds write in the …6.5
• CVE-2026-121955FreeRDP before 3.32.2 contains a use-after-free vulnerabilit…6.5
• CVE-2026-121956FreeRDP before 3.32.2 contains a double free in the WinPR Ke…7.5
• CVE-2026-121957FreeRDP before 3.32.2 contains a use-after-free vulnerabilit…7