Unrated severityNVD Advisory· Published Aug 2, 2026
Debian freerdp3: FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certifi…
CVE-2026-67293
Description
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.
Affected products
2Patches
Vulnerability mechanics
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