CVE-2026-22854

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

Vendor	Product	Versions
FreeRDP	FreeRDP	< 3.20.1

References

https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1Release Notes
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-47vj-g3c3-3rmfExploit, Vendor Advisory

Timeline

Published: Jan 14, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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