CVE-2026-22855 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

No data.

No data.

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References

Link	Providers
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9

History

Wed, 14 Jan 2026 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 14 Jan 2026 18:00:00 +0000

Type	Values Removed	Values Added
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.
Title		FreeRDP has a heap-buffer-overflow in smartcard_unpack_set_attrib_call
Weaknesses		CWE-125
References		https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1 https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9
Metrics		cvssV4_0 `{'score': 5.6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P'}`

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-01-14T17:50:06.209Z

Updated: 2026-01-14T21:06:26.553Z

Reserved: 2026-01-12T16:20:16.746Z

Link: CVE-2026-22855

Vulnrichment

Updated: 2026-01-14T21:06:23.536Z

NVD

Status : Received

Published: 2026-01-14T18:16:43.080

Modified: 2026-01-14T18:16:43.080

Link: CVE-2026-22855

Redhat

No data.

OpenCVE Enrichment

No data.

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