CVE-2026-27015
Fixed in a distro release EPSS <1%CVSS 5.0
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.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | freerdp | 2:2.11.7-1.amzn2.0.8 |
| Amazon Linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.8 |
| Amazon Linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.8 |
| Amazon Linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.8 |
| Amazon Linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.8 |
| Amazon Linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.7 |
| Amazon Linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.7 |
| Amazon Linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.7 |
| Amazon Linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.7 |
| Amazon Linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.7 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.7 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u1 |
| Debian 14 | freerdp3 | 3.23.0+dfsg-1 |
| Ubuntu 16.04 LTS | freerdp | no fix |
| Ubuntu 18.04 LTS | freerdp | no fix |
| Ubuntu 22.04 LTS | freerdp2 | no fix |
| Ubuntu 24.04 LTS | freerdp3 | 3.5.1+dfsg1-0ubuntu1.4 |
| Ubuntu 25.10 | freerdp3 | 3.16.0+dfsg-2ubuntu0.3 |
| Ubuntu Pro 18.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 20.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 24.04 LTS | freerdp2 | no fix |
| openSUSE Tumbleweed | freerdp2 | 2.11.7-8.1 |