CVE-2026-22859CRITICAL 9.1EPSS p37.1%

CVE-2026-22859CVE-2026-22859

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, the URBDRC client does not perform bounds checking on server‑supplied MSUSB_INTERFACE_DESCRIPTOR values and uses them as indices in libusb_udev_complete_msconfig_setup, causing an out‑of‑bounds read. This vulnerability is fixed in 3.20.1.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS0.47% probability of exploitation · percentile 37.1% · 2026-06-18T12:00:27Z
Published2026-01-14
Last modified2026-01-20

Underlying weaknesses· 2

CWE-125CWE-129

References

  1. https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
  2. https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36

2

TypeTargetConfidenceTier
WeaknessOut-of-bounds Readcwe-1250%live
WeaknessImproper Validation of Array Indexcwe-1290%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.