CVE-2026-121951High· 7.5▾ MidnightPoC availableFreeRDP 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…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 41.3 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.4%
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.
FreeRDP >= 3.0.0 < 3.32.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-121960High· 7.5FreeRDP before 3.32.2 Unauthenticated Denial of Service via CredSSP TSRequest
CVE-2026-121409Medium· 5.9FreeRDP before 3.32.2 Denial of Service via Oversized X.224 Routing Token
CVE-2026-121389Low· 3.1FreeRDP 3.27.0 before 3.32.2 Client DoS via RDPDR Device Announcement Logging
CVE-2026-121393Medium· 6.5FreeRDP 3.0.0 before 3.32.2 Denial of Service via RemoteFX Region Assertion
CVE-2026-121406Medium· 4.3FreeRDP before 3.32.2 Client Denial of Service via Zero-Output ZGFX Payload
CVE-2026-121394Medium· 6.5FreeRDP before 3.32.2 Denial of Service via RemoteFX RLGR decoder