Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck

CVE-2026-121389FreeRDP 3.27.0 before 3.32.2 Client DoS via RDPDR Device Announcement Logging

Low 3.1

In plain English

A low-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 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.1Low

Exploit odds (30 days)0.3%top 76.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FreeRDP from 3.27.0 before 3.32.2 contains a denial of service vulnerability in rdpdr_dump_packet that allows malicious RDP servers to abort clients by sending malformed RDPDR device-list announcements. Attackers can declare a DeviceDataLength exceeding the received packet, triggering a fatal Stream_Seek assertion when device redirection, TRACE logging, and WinPR assertions are enabled.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-121389
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-121389
Debian:14	freerdp3	3.32.2+dfsg-1	DEBIAN-CVE-2026-121389
Ubuntu:22.04:LTS	freerdp2	no fix listed	UBUNTU-CVE-2026-121389
Ubuntu:24.04:LTS	freerdp3	no fix listed	UBUNTU-CVE-2026-121389
Ubuntu:26.04:LTS	freerdp3	no fix listed	UBUNTU-CVE-2026-121389
Ubuntu:26.10	freerdp3	no fix listed	UBUNTU-CVE-2026-121389

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	3.27.0 – before 3.32.2

Weakness: CWE-617 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-66mr-7wc7-23vc) vendor-advisory
VulnCheck Advisory: FreeRDP 3.27.0 before 3.32.2 Client DoS via RDPDR Device Announcement Logging third-party-advisory