Denial of Service Vulnerability in FreeRDP by FreeRDP
CVE-2026-121960

8.7HIGH

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
4 November 2026

What is CVE-2026-121960?

FreeRDP versions prior to 3.32.2 are susceptible to a denial of service issue within the NLA-enabled shadow server. This vulnerability allows unauthenticated attackers to exploit the system by sending a specially crafted seven-byte TSRequest that only includes the version field. This can lead to a fatal WINPR_ASSERT, resulting in the abrupt termination of the server process, potentially disrupting service availability.

Affected Version(s)

FreeRDP 0 < 3.32.2

FreeRDP 3.32.2

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/freerdp-before-3.32....
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kushalkhemka
mayank-jangid-moon
opensec-intelligence
.