CVE-2026-33952
Fixed in a distro release EPSS <1%CVSS 6.0
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, an unvalidated auth_length field read from the network triggers a WINPR_ASSERT() failure in rts_read_auth_verifier_no_checks(), causing any FreeRDP client connecting through a malicious RDP Gateway to crash with SIGABRT. This is a pre-authentication denial of service affecting all FreeRDP clients using RPC-over-HTTP gateway transport. The assertion is active in default release builds (WITH_VERBOSE_WINPR_ASSERT=ON). This issue has been patched in version 3.24.2.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | freerdp | 2:2.11.7-1.amzn2.0.10 |
| Amazon Linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.10 |
| Amazon Linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.10 |
| Amazon Linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.10 |
| Amazon Linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.10 |
| Amazon Linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.10 |
| Amazon Linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.10 |
| Amazon Linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.10 |
| Amazon Linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.10 |
| Amazon Linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.10 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.10 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | 3.15.0+dfsg-2.1+deb13u2 |
| Debian 14 | freerdp3 | 3.24.2+dfsg-1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | freerdp | 3.10.3-150700.3.17.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | freerdp | 3.10.3-150700.3.17.1 |
| 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 | 3.30.0+dfsg-0ubuntu0.24.04.1 |
| Ubuntu 25.10 | freerdp3 | no fix |
| Ubuntu 26.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.26.04.1 |
| 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 | freerdp | 3.24.2-1.1 |