CVE-2026-67293
Fixed in a distro release EPSS <1%CVSS 4.2
FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname validation vulnerability. The TLS hostname matcher (tls_match_hostname() in libfreerdp/crypto/tls.c) treats a wildcard pattern such as *.example.com as matching any hostname ending in .example.com, so it incorrectly accepts a wildcard certificate for multi-label subdomains like a.b.example.com (which OpenSSL's X509_check_host() rejects). This weakens TLS server authentication under wildcard-certificate conditions.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | freerdp | 2:2.11.7-1.amzn2.0.14 |
| Amazon Linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.14 |
| Amazon Linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.14 |
| Amazon Linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.14 |
| Amazon Linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.14 |
| Amazon Linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.15 |
| Amazon Linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.15 |
| Amazon Linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.15 |
| Amazon Linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.15 |
| Amazon Linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.15 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.15 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | no fix |
| Debian 14 | freerdp3 | 3.29.0+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 | 3.30.0+dfsg-0ubuntu0.24.04.1 |
| 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 |