CVE-2021-36173

—

CVSS 3.1

8.8 high

EPSS

1%p72

Published

Dec 8, 2021 (Dec 8, 2021)

Modified

Jun 17, 2026

Description

A heap-based buffer overflow in the firmware signature verification function of FortiOS versions 7.0.1, 7.0.0, 6.4.0 through 6.4.6, 6.2.0 through 6.2.9, and 6.0.0 through 6.0.13 may allow an attacker to execute arbitrary code via specially crafted installation images.

Vendors: fortinet
Products: fortios
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.4%)

In the news0 stories

No ingested article mentions this CVE yet.