CVE-2026-121951

EUVD-2026-116951
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
freerdpfreerdp
3.0.0 ≤
𝑥
< 3.32.2
CNA
Debian logo
Debian Releases
Debian Product
Codename
freerdp2
bookworm
vulnerable
freerdp3
forky
3.32.2+dfsg-1
fixed
sid
3.33.0+dfsg-1
fixed
trixie
vulnerable
Common Weakness Enumeration
References
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qq4-qwxq-49m8
https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-denial-of-service-via-slow-path-input-event
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qq4-qwxq-49m8