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Tracking
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| Source | ID | Title |
|---|---|---|
Ubuntu USN |
USN-8561-1 | FreeRDP vulnerabilities |
Wed, 19 Aug 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 19 Aug 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients that negotiate RDPGFX AVC444 with an H.264 decoder backend calculate the intermediate YUV444 allocation size in libfreerdp/codec/h264.c with 32-bit multiplication in avc444_ensure_buffer. A malicious RDP server can supply surface dimensions for which piDstStride multiplied by padDstHeight wraps to a small nonzero value, causing winpr_aligned_recalloc to allocate an undersized buffer before YUV420CombineToYUV444 writes using the actual stride and rectangle dimensions. This can cause a client crash and may permit code execution through attacker-influenced heap corruption. This issue is fixed in version 3.27.0. | |
| Title | FreeRDP: Heap-buffer-overflow write in AVC444 YUV buffer allocation | |
| Weaknesses | CWE-122 CWE-190 |
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| References |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-19T18:17:07.147Z
Reserved: 2026-06-16T15:20:43.086Z
Link: CVE-2026-55191
Updated: 2026-08-19T18:16:09.730Z
Status : Received
Published: 2026-08-19T18:16:44.427
Modified: 2026-08-19T19:17:19.833
Link: CVE-2026-55191
No data.
OpenCVE Enrichment
No data.
Ubuntu USN