Name: CVE-2026-85090: Out-of-bounds Read
Creator: Rapid7
Published: 2026-09-03T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-85090, CWE-125, CVSS 5.4, EPSS 0.00281

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 Details

CVSS 4.0 Base Score: 5.3 (MEDIUM)
CVSS 4.0 Vector: (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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 5.4
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon Linux Ami 2	—	Upgrade libwinprUpgrade freerdp-libsUpgrade freerdp-develUpgrade libwinpr-develUpgrade freerdp-debuginfoUpgrade freerdp	Oct 19, 2026	Oct 19, 2026
Amazon_linux_2023	—	Upgrade libwinpr-develUpgrade freerdp-debugsourceUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-libs-debuginfoUpgrade freerdp-debuginfoUpgrade freerdpUpgrade libwinprUpgrade freerdp-develUpgrade libwinpr-debuginfoUpgrade freerdp-server-debuginfo	Sep 30, 2026	Sep 3, 2026
Ubuntu	—	Upgrade freerdp3	Sep 14, 2026	Sep 4, 2026

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CVSS Details

Covered by Rapid7

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