Is CVE-2025-25253 actively exploited?

CVE-2025-25253 has no public evidence of in-the-wild exploitation as of 2025-10-15.

What is the CVSS score for CVE-2025-25253?

CVE-2025-25253 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-25253?

Patch guidance is available from fortinet security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-25253.

Fix CVE-2025-25253 - HIGH fortinet fortiproxy

Q: Which products are affected by CVE-2025-25253?

4 products: fortinet fortiproxy, fortinet fortiproxy, fortinet fortios, fortinet fortios.

Description

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

CVSS Metrics

Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: adjacent network
Complexity: high
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-297

Metadata

Primary Vendor: FORTINET
Published: 10/14/2025
Last Modified: 10/15/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-25253

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary