CVE-2026-27015
February 25, 2026
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds check in "smartcard_unpack_read_size_align()" ("libfreerdp/utils/smartcard_pack.c:1703") allows a malicious RDP server to crash the FreeRDP client via a reachable "WINPR_ASSERT" → "abort()". The crash occurs in upstream builds where "WITH_VERBOSE_WINPR_ASSERT=ON" (default in FreeRDP 3.22.0 / current WinPR CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., "xfreerdp /smartcard"; "/smartcard-logon" implies "/smartcard"). Version 3.23.0 fixes the issue.
Affected Packages
https://github.com/FreeRDP/FreeRDP.git (GITHUB):
Affected version(s) >=3.0.0 <3.23.0Fix Suggestion:
Update to version 3.23.0https://github.com/FreeRDP/FreeRDP.git (GITHUB):
Affected version(s) >=1.0-beta1 <2.11.8Fix Suggestion:
Update to version 2.11.8Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
5
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Reachable Assertion
EPSS
Base Score:
0.04
