CVE-2026-109952
Fixed in a distro release EPSS <1%CVSS 5.3
The FreeRDP client 3.0.0 before 3.32.0 does not check a server-selected PROTOCOL_RDSTLS or PROTOCOL_HYBRID_EX against its enabled protocol set in nego_process_negotiation_response(), allowing a security protocol downgrade. A malicious server or man-in-the-middle can select RDSTLS to override /sec:nla pinning, complete authentication with an all-zero cookie, and receive the user's cleartext password in the Client Info PDU.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2023 | freerdp | 2:3.32.1-1.amzn2023.0.1 |
| Amazon Linux 2023 | freerdp-devel | 2:3.32.1-1.amzn2023.0.1 |
| Amazon Linux 2023 | freerdp-libs | 2:3.32.1-1.amzn2023.0.1 |
| Amazon Linux 2023 | freerdp-server | 2:3.32.1-1.amzn2023.0.1 |
| Amazon Linux 2023 | libwinpr | 2:3.32.1-1.amzn2023.0.1 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.32.1-1.amzn2023.0.1 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | no fix |
| Debian 14 | freerdp3 | 3.32.0+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 | 3.32.0+dfsg-0ubuntu0.24.04.1 |
| Ubuntu 26.04 LTS | freerdp3 | 3.32.0+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 |