CVE-2021-36173

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.

Category

8.0
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.63%
Vendor Advisory fortiguard.com
Affected: Fortinet Fortinet FortiOS
Published at:
Updated at:

References

Link Tags
https://fortiguard.com/advisory/FG-IR-21-115 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-36173?
CVE-2021-36173 has been scored as a high severity vulnerability.
How to fix CVE-2021-36173?
To fix CVE-2021-36173, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36173 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-36173 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-36173?
CVE-2021-36173 affects Fortinet Fortinet FortiOS.
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