CVE-2025-53844

8.8 HIGH

Published: May 12, 2026 Modified: June 09, 2026

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

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

Source: psirt@fortinet.com

Vendor Advisory

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

Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

2 reference(s) from NVD

Quick Stats

CVSS v3 Score

8.8 / 10.0

EPSS (Exploit Probability)

0.6%

42th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-787

Affected Vendors

fortinet

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