CVE-2026-121960

high

Description

FreeRDP before 3.32.2 contains a denial of service vulnerability in the NLA-enabled shadow server when a CredSSP TSRequest omits negoTokens. Unauthenticated attackers can send a crafted seven-byte TSRequest containing only the version field to trigger a fatal WINPR_ASSERT and abort the server process.

References

https://www.vulncheck.com/advisories/freerdp-before-3.32.2-unauthenticated-denial-of-service-via-credssp-tsrequest

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3pg4-5r42-wxvj

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-116960

Details

Source: Mitre, NVD

Published: 2026-11-04

Updated: 2026-11-04

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00455