CVE-2026-27015
FreeRDP: Smartcard NDR Alignment Padding Triggers Reachable WINPR_ASSERT Abort (Client DoS)
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-617 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Feb 25, 2026 |
| Last Updated | Feb 26, 2026 |
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Free · No credit card · 60 sec setup
Affected Versions
FreeRDP / FreeRDP
< 3.23.0