CVE-2025-53843

7.5 HIGH

A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all version...

Published: 2025-11-18 · Last updated: 2026-06-09

Severity and scoring

CVSS: 7.5 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-121

Affected products

Vendor	Product
fortinet	fortios

Description

A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions allows attacker to execute unauthorized code or commands via specially crafted packets

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2025-53843
[Vendor advisory]https://fortiguard.fortinet.com/psirt/FG-IR-25-358
[Other]https://cert-portal.siemens.com/productcert/html/ssa-864900.html

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