CVE-2022-27489: A improper neutralization of special elements used in an os command ('os command injection') in Fortinet Forti

Q: How do I fix CVE-2022-27489?

fortiextender firmware: upgrade to 3.2.4, 3.3.3, 4.1.9, 4.2.5, 7.0.4. Exact commands for each OS are on this page.

Q: Is CVE-2022-27489 being exploited?

CVE-2022-27489 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-27489 affect?

CVE-2022-27489 affects fortiextender firmware. Severity is high (CVSS 7.2). A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiExtender 7.0.0 through 7.0.3, 5.3.2, 4.2.4 and below allows attacker to execute unauthorized code or commands via crafted HTTP req

This month

HIGH 7.2UPGRADE

CVE-2022-27489 is a high-severity flaw (CVSS 7.2) affecting fortiextender firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiExtender 7.0.0 through 7.0.3, 5.3.2, 4.2.4 and below allows attacker to execute unauthorized code or commands via crafted HTTP requests.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-78
Published	2023-02-16
Last modified	2026-06-17

Publisher (CNA): Fortinet, Inc. · Vendor: fortinet

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-16 19:15 UTCPublished CVE record published
2026-06-17 04:37 UTCUpdated Record last modified

fortinet fortiextender firmware UPGRADE

Affected: >= 3.2.1 and < 3.2.4 · >= 3.3.0 and < 3.3.3 · >= 4.1.1 and < 4.1.9 · >= 4.2.0 and < 4.2.5 · >= 7.0.0 and < 7.0.4 · 3.0.0 · 3.0.1 · 3.0.2

Fixed in: 3.2.4, 3.3.3, 4.1.9, 4.2.5, 7.0.4

Safe to downgrade to: a release before 3.0.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-27489?

fortiextender firmware: upgrade to 3.2.4, 3.3.3, 4.1.9, 4.2.5, 7.0.4. Exact commands for each OS are on this page.

Is CVE-2022-27489 being exploited?

CVE-2022-27489 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-27489 affect?

CVE-2022-27489 affects fortiextender firmware. Severity is high (CVSS 7.2). A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiExtender 7.0.0 through 7.0.3, 5.3.2, 4.2.4 and below allows attacker to execute unauthorized code or commands via crafted HTTP req

How urgent is CVE-2022-27489?

Priority 44/100. High severity

Software pages

Fortinet vulnerabilities

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References

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