CVE-2026-22854CRITICAL 9.8EPSS p35.9%

CVE-2026-22854CVE-2026-22854

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.45% probability of exploitation · percentile 35.9% · 2026-06-18T12:00:27Z
Published2026-01-14
Last modified2026-01-20

Underlying weaknesses· 1

CWE-122

References

  1. https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
  2. https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47vj-g3c3-3rmf

1

TypeTargetConfidenceTier
WeaknessHeap-based Buffer Overflowcwe-1220%live

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