CVE-2025-25253

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 3.1

7.5CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-25)

CWE

CWE-297

Published

2025-10-14

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

Affected

• fortinet:fortios
• fortinet:fortiproxy

References

• https://fortiguard.fortinet.com/psirt/FG-IR-24-457
• https://cert-portal.siemens.com/productcert/html/ssa-864900.html

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