CVE-2026-22855 PUBLISHED

FreeRDP has a heap-buffer-overflow in smartcard_unpack_set_attrib_call

Assigner: GitHub_M
Reserved: 12.01.2026 Published: 14.01.2026 Updated: 14.01.2026

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.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 5.6

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	High	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	FreeRDP
Product	FreeRDP
Versions	Version < 3.20.1 is affected

References

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

Problem Types

CWE-125: Out-of-bounds Read CWE