Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck
CVE-2026-121960FreeRDP before 3.32.2 Unauthenticated Denial of Service via CredSSP TSRequest
High 7.5
In plain English
A high-severity security flaw in FreeRDP from FreeRDP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 53.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | freerdp2 | no fix listed | DEBIAN-CVE-2026-121960 |
| Debian:13 | freerdp3 | no fix listed | DEBIAN-CVE-2026-121960 |
| Debian:14 | freerdp3 | 3.32.2+dfsg-1 | DEBIAN-CVE-2026-121960 |
Affected products (as reported)
Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-3pg4-5r42-wxvj) vendor-advisory
- VulnCheck Advisory: FreeRDP before 3.32.2 Unauthenticated Denial of Service via CredSSP TSRequest third-party-advisory