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CVE-2025-25253An Improper Validation of Certificate with Host Mismatch vulnerability [CWE-297] in FortiProxy version 7.6.1 and below, version 7.4.8 and…

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

Timeline

  1. ID reserved

    By fortinet

  2. · 8 months later

    Published

  3. · 12 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-25253, by who scored it
Scored byCVSSScoreVector
fortinetCNA (assigner)3.1Medium6.8CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.11% · top 99% of all CVEs (13 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.

Affected products

  • Fortinet · FortiProxy

    • affected 7.6.0 – ≤ 7.6.1
    • affected 7.4.0 – ≤ 7.4.8
    • affected 7.2.0 – ≤ 7.2.15
    • affected 7.0.0 – ≤ 7.0.22

  • Fortinet · FortiOS

    • affected 7.6.0 – ≤ 7.6.2
    • affected 7.4.0 – ≤ 7.4.8
    • affected 7.2.0 – ≤ 7.2.12
    • affected 7.0.0 – ≤ 7.0.18

  • Fortinet · FortiPAM

    • affected 1.4.1

What to do

Solution: 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

References

References2

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2025-25253 badge
[![CVE-2025-25253](https://cveledger.app/badge/CVE-2025-25253.svg)](https://cveledger.app/cve/CVE-2025-25253)

Record last updated .