Use After Free in Freerdp
CVE-2026-27950
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.003
Affected products
- Freerdp — versions < 3.23.0
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rvfg-86cr-5r6p (Patch, Vendor Advisory)
- github.com/FreeRDP/FreeRDP/commit/5f62aa11c1bdf00f94c40ea9ebb260a752740b80 (Patch)
- github.com/FreeRDP/FreeRDP/commit/c42ecbd183b001e76bfc3614cddfad0034acc758 (Patch)
- github.com/FreeRDP/FreeRDP/blob/master/client/SDL/SDL2/sdl_pointer.cpp (Product)
Frequently asked questions
- What is CVE-2026-27950?
- CVE-2026-27950 is a high-severity vulnerability in Freerdp, classified under Use After Free. CVSS score: 7.5/10. Published 2026-02-25.
- How severe is CVE-2026-27950?
- High severity. CVSS v3 base score is 7.5 out of 10.