CVE-2026-39815: A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortin

Routine

HIGH 8.8UPGRADE

CVE-2026-39815 is a high-severity flaw (CVSS 8.8) affecting 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 sql command ('sql injection') vulnerability in Fortinet FortiDDoS-F 7.2.1 through 7.2.2 may allow attacker to execute unauthorized code or commands via sending crafted HTTP requests

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-04-14
Last modified	2026-10-26

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

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-14 16:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

fortinet fortiddos-f UPGRADE

Affected: >= 7.2.1 and < 7.2.3

Fixed in: 7.2.3

Safe to downgrade to: a release before 7.2.1

1. Check installed version

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

2. UPGRADE to 7.2.3 (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 7.2.1 (Debian / Ubuntu)

apt-cache madison fortiddos-f sudo apt install fortiddos-f=<VERSION_BEFORE_7.2.1> 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_7.2.1> 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-2026-39815?

fortiddos-f: upgrade to 7.2.3. Exact commands for each OS are on this page.

Is CVE-2026-39815 being exploited?

CVE-2026-39815 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-2026-39815 affect?

CVE-2026-39815 affects fortiddos-f. Severity is high (CVSS 8.8). A improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiDDoS-F 7.2.1 through 7.2.2 may allow attacker to execute unauthorized code or commands via sending crafted HTTP requests

How urgent is CVE-2026-39815?

Priority 38/100. High severity

Software pages

Fortinet vulnerabilities

References

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