CVE-2026-22855

CRITICAL

9.1

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length. This vulnerability is fixed in 3.20.1.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/14/2026

Last Modified1/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

freerdp:freerdp

Weaknesses (CWE)

CWE-125

References

https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1(security-advisories@github.com)

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9(security-advisories@github.com)

IOC Correlations

No correlations recorded

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