CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
30 Mar 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuv_ensure_buffer() in libfreerdp/codec/h264.c, h264->width and h264->height are updated before the reallocation loop. If any winpr_aligned_recalloc() call fails, the function returns FALSE but width/height are already inflated. This issue has been patched in version 3.24.2.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
FreeRDP · FreeRDPWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →