CVE-2021-36173 Information

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.

CVSS Vector

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

Reference

https://fortiguard.com/advisory/FG-IR-21-115

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8