What is CVE-2021-36173?

CVE-2021-36173 is a high-severity vulnerability in Fortinet Fortigate-1100e, classified under Out-of-bounds Write. 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.

Buffer overflow in Fortinet Fortigate-1100e

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…

Vulnerability class: Buffer Overflow

EPSS: 0.014 (70.3th 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.

Affected products

Fortinet Fortigate-1100e
Fortinet Fortigate_1800f
Fortinet Fortigate-200f
Fortinet Fortigate_2200e
Fortinet Fortigate-2600f
Fortinet Fortigate_3300e
Fortinet Fortigate-3500f
Fortinet Fortigate_3600e
Fortinet Fortigate-400e
Fortinet Fortigate_40f

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

psirt@fortinet.com (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-36173?: CVE-2021-36173 is a high-severity vulnerability in Fortinet Fortigate-1100e, classified under Out-of-bounds Write. 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.