CVE-2019-15710: An OS command injection vulnerability in FortiExtender 4.1.0 to 4.1.1, 4.0.0 and below under CLI admin console

Q: How do I fix CVE-2019-15710?

fortiextender firmware: upgrade to newer than 4.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2019-15710 being exploited?

CVE-2019-15710 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-2019-15710 affect?

CVE-2019-15710 affects fortiextender firmware. Severity is high (CVSS 7.2). An OS command injection vulnerability in FortiExtender 4.1.0 to 4.1.1, 4.0.0 and below under CLI admin console may allow unauthorized administrators to run arbitrary system level commands via specially crafted "execute date" commands.

This month

HIGH 7.2UPGRADE

CVE-2019-15710 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.

An OS command injection vulnerability in FortiExtender 4.1.0 to 4.1.1, 4.0.0 and below under CLI admin console may allow unauthorized administrators to run arbitrary system level commands via specially crafted "execute date" commands.

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	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-78
Published	2019-10-31
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2019-10-31 20:15 UTCPublished CVE record published
2026-06-17 02:20 UTCUpdated Record last modified

fortiguard fortiextender firmware UPGRADE

Affected: <= 4.1.1

Fixed in: newer than 4.1.1

Safe to downgrade to: no unaffected older release

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-2019-15710?

fortiextender firmware: upgrade to newer than 4.1.1. Exact commands for each OS are on this page.

Is CVE-2019-15710 being exploited?

CVE-2019-15710 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-2019-15710 affect?

CVE-2019-15710 affects fortiextender firmware. Severity is high (CVSS 7.2). An OS command injection vulnerability in FortiExtender 4.1.0 to 4.1.1, 4.0.0 and below under CLI admin console may allow unauthorized administrators to run arbitrary system level commands via specially crafted "execute date" commands.

How urgent is CVE-2019-15710?

Priority 45/100. High severity

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References

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