Name: CVE-2025-53844: Out-of-bounds Write
Creator: Rapid7
Published: 2026-05-12T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-53844, CWE-787, CVSS 8.3, EPSS 0.00023

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.

CVSS Details

CVSS 3.1 Base Score: 8.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Fortios	—	Upgrade to the latest version of FortiOSUpgrade FortiOS to 7.4.9Upgrade FortiOS to 7.6.4Upgrade FortiOS to 7.2.12	Jun 23, 2026	May 12, 2026

Prioritize with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business

CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence