CVE-2025-25253: High severity Fortinet FortiProxy vulnerability
An Improper Validation of Certificate with Host Mismatch vulnerability [CWE-297] in FortiProxy version 7.6.1 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions and FortiOS version 7.6.2 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions ZTNA proxy may allow an unauthenticated attacker in a man-in-the middle position to intercept and tamper with connections to the ZTNA proxy
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
FortiProxyto a version that resolves this vulnerability.Fixed in 7.4.9 - Upgrade
Upgrade
FortiProxyto a version that resolves this vulnerability.Fixed in 7.6.2 - Upgrade
Upgrade
FortiOSto a version that resolves this vulnerability.Fixed in 7.4.9 - Upgrade
Upgrade
FortiOSto a version that resolves this vulnerability.Fixed in 7.6.3
Event History
Frequently Asked Questions
What is the severity of CVE-2025-25253?
CVE-2025-25253 is categorized as a critical vulnerability due to improper validation of certificates.
How do I fix CVE-2025-25253?
To fix CVE-2025-25253, update FortiProxy to version 7.6.2 or later, and FortiOS to version 7.6.3 or later.
Which products are affected by CVE-2025-25253?
CVE-2025-25253 affects FortiProxy versions 7.6.1 and below and FortiOS versions 7.6.2 and below.
What types of vulnerabilities does CVE-2025-25253 represent?
CVE-2025-25253 represents an Improper Validation of Certificate with Host Mismatch vulnerability, as classified by CWE-297.
Can CVE-2025-25253 be exploited remotely?
Yes, CVE-2025-25253 can potentially be exploited remotely, allowing unauthorized access to resources.