CVE-2026-121951

HIGH 7.5

FreeRDP 3.0.0 before 3.32.2 Denial of Service via Slow-Path Input Event

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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	CWE-617
Vendor	freerdp
Product	freerdp
Published	Nov 4, 2026
Last Updated	Nov 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

FreeRDP / FreeRDP

3.0.0 < 3.32.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qq4-qwxq-49m8 vulncheck.com: https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-denial-of-service-via-slow-path-input-event

Credits

Kushalkhemka mayank-jangid-moon opensec-intelligence