---
id: CVE-2025-25253
title: >-
  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 be…
summary: >-
  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 be…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'
cvssSource: cna
cwe:
  - CWE-297
vendor: Fortinet
product: FortiProxy
affected:
  - FortiProxy >= 7.6.0 <= 7.6.1
  - FortiProxy >= 7.4.0 <= 7.4.8
  - FortiProxy >= 7.2.0 <= 7.2.15
  - FortiProxy >= 7.0.0 <= 7.0.22
  - FortiOS >= 7.6.0 <= 7.6.2
  - FortiOS >= 7.4.0 <= 7.4.8
  - FortiOS >= 7.2.0 <= 7.2.12
  - FortiOS >= 7.0.0 <= 7.0.18
  - FortiPAM 1.4.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-10-16T03:57:12.627770Z'
published: '2025-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:05:51.364Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-25253'
references:
  - url: 'https://fortiguard.fortinet.com/psirt/FG-IR-24-457'
    label: 'https://fortiguard.fortinet.com/psirt/FG-IR-24-457'
tags:
  - cve.org
epss: 0.00114
epssPercentile: 0.01355
ingestedAt: '2026-10-15T05:52:46.101Z'
---

## Overview

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

- `FortiProxy >= 7.6.0 <= 7.6.1`
- `FortiProxy >= 7.4.0 <= 7.4.8`
- `FortiProxy >= 7.2.0 <= 7.2.15`
- `FortiProxy >= 7.0.0 <= 7.0.22`
- `FortiOS >= 7.6.0 <= 7.6.2`
- `FortiOS >= 7.4.0 <= 7.4.8`
- `FortiOS >= 7.2.0 <= 7.2.12`
- `FortiOS >= 7.0.0 <= 7.0.18`
- `FortiPAM 1.4.1`

## Remediation

Upgrade to FortiProxy version 7.6.2 or above
Upgrade to FortiProxy version 7.4.9 or above
Upgrade to FortiOS version 7.6.3 or above
Upgrade to FortiOS version 7.4.9 or above