Medium severity4.2NVD Advisory· Published Aug 1, 2026· Updated Sep 29, 2026
CVE-2026-67293
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
3- github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319fnvdPatch
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5wr6-8m8j-3h7fnvdExploitVendor Advisory
- www.vulncheck.com/advisories/freerdp-before-improper-certificate-hostname-validationnvdThird Party Advisory
News mentions
1- Freerdp: 21 Vulnerabilities Disclosed Together, Patch Released in 3.29.0Vypr Intelligence · Aug 2, 2026