CVE-2026-85090
FreeRDP before 3.31.0 contains a heap out-of-bounds read vulnerability in the general_ChromaV1ToYUV444 function during AVC444 chroma plane reconstruction.
Does this matter?
Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.28% probability · 20th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- freerdp/freerdp
- Source
- disclosure@vulncheck.com
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/FreeRDP/FreeRDPProduct
- https://github.com/FreeRDP/FreeRDP/blob/3.30.0/libfreerdp/primitives/prim_YUV.cProduct
- https://github.com/FreeRDP/FreeRDP/commit/d0a481cb74ab57bca24791fe11b89464a332d3f1Patch
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0Product, Release Notes
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-57h7-vw2f-2f9xExploit, Mitigation, Vendor Advisory
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-heap-out-of-bounds-read-via-avc444Patch, Release Notes, Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-57h7-vw2f-2f9xExploit, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.