Vulnerability · Published Oct 13, 2026 · Assigned by VulnCheck

CVE-2026-109943FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order

Medium 6.5

In plain English

A medium-severity double free 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 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 78.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	freerdp2	no fix listed	DEBIAN-CVE-2026-109943
Debian:13	freerdp3	no fix listed	DEBIAN-CVE-2026-109943
Debian:14	freerdp3	3.32.0+dfsg-1	DEBIAN-CVE-2026-109943
Ubuntu:22.04:LTS	freerdp2	no fix listed	UBUNTU-CVE-2026-109943
Ubuntu:24.04:LTS	freerdp3	3.32.0+dfsg-0ubuntu0.24.04.1	UBUNTU-CVE-2026-109943
Ubuntu:26.04:LTS	freerdp3	3.32.0+dfsg-0ubuntu0.26.04.1	UBUNTU-CVE-2026-109943

Affected products (as reported)

Vendor	Product	Versions
FreeRDP	FreeRDP	3.29.0 – before 3.32.0

Weakness: CWE-415 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-pg3f-chj4-mrw6) vendor-advisory
VulnCheck Advisory: FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order third-party-advisory