CVE-2025-53844

high

Description

A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.

References

https://www.securityweek.com/fortinet-ivanti-patch-critical-vulnerabilities/

https://fortiguard.fortinet.com/psirt/FG-IR-26-123

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-209802

https://cert-portal.siemens.com/productcert/html/ssa-864900.html

Details

Source: Mitre, NVD

Published: 2026-05-12

Updated: 2026-10-07

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.8

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