CVE-2026-85090
FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 3, 2026
- Updated
- Sep 5, 2026
- Reserved
- Sep 2, 2026
Description
FreeRDP before 3.31.0 contains a heap out-of-bounds read vulnerability in the general_ChromaV1ToYUV444 function during AVC444 chroma plane reconstruction. A malicious RDP server can craft a RFX_AVC444_BITMAP_STREAM with specific frame geometry to trigger an out-of-bounds memory read past the allocated luma plane.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
FreeRDPFreeRDP |
|
References
- GitHub Security Advisory (GHSA-57h7-vw2f-2f9x)vendor-advisory
- Patch Commitpatch
- FreeRDP 3.31.0 Release Notesrelease-notes
- https://github.com/FreeRDP/FreeRDP/blob/3.30.0/libfreerdp/primitives/prim_YUV.ctechnical-description
- https://github.com/FreeRDP/FreeRDPproduct
- VulnCheck Advisory: FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444third-party-advisory
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