Background exploitation KEV catalog

CVE-2021-44168

Fortinet FortiOS Arbitrary File Download

A download of code without integrity check vulnerability in the "execute restore src-vis" command of FortiOS before 7.0.3 may allow a local authenticated attacker to download arbitrary files on the device via specially crafted update…

CheckOps priority index

2.5/10 Patch within 7 days

Severity3.3

Probability0.1

Exploitation2/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 0.91% higher than 59.9% of CVEs

CVSS 3.1 3.3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:

Exploited for 1,789 days 10 Dec 2021

CISA due date 24 Dec 2021 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 2 / 5

KEV catalog (CISA)10 Dec 2021
Exploited in EUVD (ENISA)10 Dec 2021
Used by ransomwareno
EPSS above 10 %0.91%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Affected products

Fortinet FortiOSFortiOS

Affected versions

FortiOS before 7.0.3

Weaknesses (CWE)

CWE-494

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

10 Dec 2021
Exploitation reported (ENISA)
10 Dec 2021
Added to the KEV catalog
24 Dec 2021
CISA remediation due date
04 Jan 2022
Published

References

Other exploited vulnerabilities from the same vendor

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CVE-2025-68686Fortinet FortiOS Exposure of Sensitive Information to an Unauthorized Actor Vulnerability
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CVE-2026-39808Fortinet FortiSandbox OS Command Injection Vulnerability
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CVE-2026-25089Fortinet FortiSandbox OS Command Injection Vulnerability
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