CVE-2026-85090
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. 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.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (22.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85090?
- CVE-2026-85090 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.4/10. Published 2026-09-03.
- How severe is CVE-2026-85090?
- Medium severity. CVSS v3 base score is 5.4 out of 10.