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CVE

CVE-2026-67293

FreeRDP before 3.29.0 Improper Certificate Hostname Validation
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CVE

CVE-2026-67293

FreeRDP before 3.29.0 Improper Certificate Hostname Validation

FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname validation vulnerability. The TLS hostname matcher (tlsmatchhostname() 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 X509checkhost() rejects). This weakens TLS server authentication under wildcard-certificate conditions.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67293.json, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5wr6-8m8j-3h7f, https://nvd.nist.gov/vuln/detail/CVE-2026-67293, https://www.vulncheck.com/advisories/freerdp-before-improper-certificate-hostname-validation, https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00166%
EPSS Percentile
0.06095%
Introduced Version
0
Fix Available
f3b4347105114fe7453828736bea069999af319f,3.30.0+dfsg-0ubuntu0.24.04.1,2:2.11.7-1.amzn2.0.14,2:3.6.3-1.amzn2023.0.15

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