Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-85090

CVE-2026-85090MEDIUM

FreeRDP before 3.31.0 Heap Out-of-Bounds Read via AVC444

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   P   L   N   L    5.3   .0028   18.7     —

AFFECTED
  Product  Versions  Fixed
  FreeRDP  3.0.0 –   3.31.0

TIMELINE
  Sep 2   Reserved by VulnCheck
  Sep 3   Published (CNA: VulnCheck)
  Sep 9   EXPLOIT PUBLISHED — CVE-2026-85090 (FreeRDP). Public exploit reference added.

CWE-125 · CNA: VulnCheck · CVSS v4.0 · 6 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 2, 2026	Reserved	Reserved by VulnCheck
September 3, 2026	Published	Published (CNA: VulnCheck)
September 9, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-85090 (FreeRDP). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
FreeRDP	FreeRDP	—	3.0.0	3.31.0

Weaknesses

CWE-125

References (6)

https://github.com/FreeRDP/FreeRDP [Product]
https://github.com/FreeRDP/FreeRDP/blob/3.30.0/libfreerdp/primitives/prim_YUV.c [Product]
https://github.com/FreeRDP/FreeRDP/commit/d0a481cb74ab57bca24791fe11b89464a332d3f1 [Patch]
https://github.com/FreeRDP/FreeRDP/releases/tag/3.31.0 [Product, Release Notes]
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-57h7-vw2f-2f9x [Exploit, Mitigation, Vendor Advisory]
https://www.vulncheck.com/advisories/freerdp-before-3.31.0-heap-out-of-bounds-read-via-avc444 [Patch, Release Notes, Third Party Advisory]

Authoritative record: CVE-2026-85090 at cve.org

Vendors: freerdp

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-85090 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.