CVE-2026-33986
FreeRDP: H.264 YUV Buffer Dimension Desync - Heap OOB Write
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-122 CWE-131 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Mar 30, 2026 |
| Last Updated | Apr 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
FreeRDP / FreeRDP
< 3.24.2