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CVE-2026-67293: 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

mediumCVSS 4.2CVE-2026-67293
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.

Details

Source
NVD Recent CVEs (US · database · site)
Severity
medium — CVSS 4.2
Published
2026-08-01
Last updated
2026-08-01
Exploitation
Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-67293

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-67293coverage & exploitation statusNVD · CVE.org

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