Vulnerability · Published Jan 14, 2026 · Assigned by GitHub_M
CVE-2026-22857FreeRDP has a heap-use-after-free in irp_thread_func
Medium 6.8
In plain English
A medium-severity use-after-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 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)6.8Medium
Exploit odds (30 days)0.5%top 54.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap use-after-free occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error path. This vulnerability is fixed in 3.20.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | freerdp | 3.22.0-r0 | ALPINE-CVE-2026-22857 |
| Debian:12 | freerdp2 | no fix listed | DEBIAN-CVE-2026-22857 |
| Debian:13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 | DEBIAN-CVE-2026-22857 |
| Debian:14 | freerdp3 | 3.20.2+dfsg-1 | DEBIAN-CVE-2026-22857 |
| Ubuntu:22.04:LTS | freerdp2 | no fix listed | UBUNTU-CVE-2026-22857 |
| Ubuntu:24.04:LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 | USN-8105-1 |
| Ubuntu:24.04:LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 | UBUNTU-CVE-2026-22857 |
| Ubuntu:25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 | UBUNTU-CVE-2026-22857 |
| Ubuntu:25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 | USN-8105-1 |
| Ubuntu:26.04:LTS | freerdp3 | 3.20.2+dfsg-1 | UBUNTU-CVE-2026-22857 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4gxq-jhq6-4cr8 x_refsource_CONFIRM
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1 x_refsource_MISC