CVE-2022-27486: A improper neutralization of special elements used in an os command ('os command injection') in Fortinet Forti

Routine

MEDIUM 6.6UPGRADEUPGRADE

CVE-2022-27486 is a medium-severity flaw (CVSS 6.6) affecting fortiddos, fortiddos-f. 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 FortiDDoS version 5.5.0 through 5.5.1, 5.4.2 through 5.4.0, 5.3.0 through 5.3.1, 5.2.0, 5.1.0, 5.0.0, 4.7.0, 4.6.0 and 4.5.0 and FortiDDoS-F version 6.3.0 through 6.3.1, 6.2.0 through 6.2.2, 6.1.0 through 6.1.4 allows an authenticated attacker to execute shell code as `root` via `execute` CLI commands.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.6 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-08-13
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

2024-08-13 16:15 UTCPublished CVE record published
2026-06-17 04:37 UTCUpdated Record last modified

fortinet fortiddos UPGRADE

Affected: >= 4.5.0 and < 5.6.2 · 5.7.0

Fixed in: 5.6.2

Safe to downgrade to: a release before 4.5.0

1. Check installed version

apt-cache policy fortiddos || rpm -q fortiddos || fortiddos --version

2. UPGRADE to 5.6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fortiddos

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fortiddos

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.5.0 (Debian / Ubuntu)

apt-cache madison fortiddos sudo apt install fortiddos=<VERSION_BEFORE_4.5.0> sudo apt-mark hold fortiddos

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fortiddos sudo dnf downgrade fortiddos-<VERSION_BEFORE_4.5.0> sudo dnf versionlock add fortiddos

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

fortinet fortiddos-f UPGRADE

Affected: all versions · >= 6.1.0 and < 6.4.2 · 6.5.0

Fixed in: 6.4.2

Safe to downgrade to: a release before 6.1.0

1. Check installed version

apt-cache policy fortiddos-f || rpm -q fortiddos-f || fortiddos-f --version

2. UPGRADE to 6.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fortiddos-f

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fortiddos-f

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 6.1.0 (Debian / Ubuntu)

apt-cache madison fortiddos-f sudo apt install fortiddos-f=<VERSION_BEFORE_6.1.0> sudo apt-mark hold fortiddos-f

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fortiddos-f sudo dnf downgrade fortiddos-f-<VERSION_BEFORE_6.1.0> sudo dnf versionlock add fortiddos-f

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2022-27486?

fortiddos: upgrade to 5.6.2; fortiddos-f: upgrade to 6.4.2. Exact commands for each OS are on this page.

Is CVE-2022-27486 being exploited?

CVE-2022-27486 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-2022-27486 affect?

CVE-2022-27486 affects fortiddos, fortiddos-f. Severity is medium (CVSS 6.6). A improper neutralization of special elements used in an os command ('os command injection') in Fortinet FortiDDoS version 5.5.0 through 5.5.1, 5.4.2 through 5.4.0, 5.3.0 through 5.3.1, 5.2.0, 5.1.0, 5.0.0, 4.7.0, 4.6.0 and 4.5.0 and FortiD

How urgent is CVE-2022-27486?

Priority 37/100. No elevated risk signals yet.

Software pages

Fortinet vulnerabilities

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References

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