CVE WatchAug 4, 2026

CVE-2024-21762

Fortinet FortiOS Out-of-Bound Write Vulnerability

CVSS

9.8

Critical

EPSS

84.3%

p100

KEV

YES

Feb 9, 2024

Exploit Today

0-100

Published: Feb 9, 2024 · Last modified: Aug 4, 2026 · CWE-787

EPSS · 30d

84.3%EPSS · 30 days84.3%

2026-08-022026-08-30

KEV catalog record

Product

Fortinet / FortiOS

Vulnerability

Fortinet FortiOS Out-of-Bound Write Vulnerability

Added to KEV

Feb 9, 2024

Remediate by

Feb 16, 2024

Known ransomware use

Yes

Summary description

Fortinet FortiOS contains an out-of-bound write vulnerability that allows a remote unauthenticated attacker to execute code or commands via specially crafted HTTP requests.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://fortiguard.fortinet.com/psirt/FG-IR-24-015 ; https://nvd.nist.gov/vuln/detail/CVE-2024-21762

Technical description

A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7 allows attacker to execute unauthorized code or commands via specifically crafted requests

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