SB2025061114 - Improper validation of certificate with host mismatch in Fortinet FortiClient for Windows
Published: June 11, 2025
Security Bulletin ID
SB2025061114
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper validation of certificate with host mismatch (CVE-ID: CVE-2024-54019)
CWE-ID: CWE-297 - Improper Validation of Certificate with Host Mismatch
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vulnerability exists due to improper validation of certificate with host mismatch. An unauthorized attacker can redirect VPN connections via DNS spoofing or another form of redirection.
Remediation
Install update from vendor's website.