What is CVE-2021-36173?

CVE-2021-36173 is a high-severity vulnerability in Fortinet Fortios. CVSS score: 8.0/10. Published 2021-12-08.

How severe is CVE-2021-36173?

High severity. CVSS v3 base score is 8.0 out of 10.

Vulnerability in Fortinet Fortios

CVE-2021-36173

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…

EPSS: 0.007 (71.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C.

Affected products

Fortinet Fortios — versions FortiOS 7.0.1, 7.0.0, 6.4.0 through 6.4.6, 6.2.0 through 6.2.9, 6.0.0 through 6.0.13

References

fortiguard.com/advisory/FG-IR-21-115 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-36173?: CVE-2021-36173 is a high-severity vulnerability in Fortinet Fortios. CVSS score: 8.0/10. Published 2021-12-08.
How severe is CVE-2021-36173?: High severity. CVSS v3 base score is 8.0 out of 10.