Fortinet FortiOS Arbitrary File Download

Added to KEV
2021-12-10
Federal due date
2021-12-24
Vendor
Fortinet
Product
FortiOS
EPSS
78.9th percentile (score 0.012, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2021-44168

CISA short description

Fortinet FortiOS "execute restore src-vis" downloads code without integrity checking, allowing an attacker to arbitrarily download files.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.