Is CVE-2026-126153 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-126153 being exploited in the wild.

How severe is CVE-2026-126153?

High severity, with a CVSS score of 7.5, published 11 November 2026.

Which products and versions are affected?

Fortinet FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2 all versions.

Is there a fix for CVE-2026-126153?

Yes: fixed in FortiMail 8.0.2 or above, 7.6.7 or above, 7.4.9 or above; 7.2 migrate to a fixed release. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-126153 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-126153?

Check whether you run Fortinet FortiMail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-126153: Fortinet FortiMail path traversal in API

CVE-2026-126153 · Severity: high · CVSS 7.5 · Published 2026-11-11

FortiMail is an email security gateway that protects organizations from email-based threats. An unauthenticated attacker can bypass pathname restrictions through crafted requests to execute unauthorized commands on affected systems, potentially compromising email infrastructure and gaining code execution.

Technologies: Fortinet FortiMail. Vendors: Fortinet.

Quick answers

Is CVE-2026-126153 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-126153 being exploited in the wild.
How severe is CVE-2026-126153?: High severity, with a CVSS score of 7.5, published 11 November 2026.
Which products and versions are affected?: Fortinet FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2 all versions.
Is there a fix for CVE-2026-126153?: Yes: fixed in FortiMail 8.0.2 or above, 7.6.7 or above, 7.4.9 or above; 7.2 migrate to a fixed release. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-126153 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-126153?: Check whether you run Fortinet FortiMail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: FortiMail 8.0.2 or above, 7.6.7 or above, 7.4.9 or above; 7.2 migrate to a fixed release

Technical details

A path traversal vulnerability (CWE-22) in the FortiMail API allows unauthenticated attackers to execute arbitrary commands via improper pathname limitation. The vulnerability affects FortiMail 8.0.0–8.0.1, 7.6.0–7.6.6, 7.4.0–7.4.8, and all 7.2 versions; exploitation requires only network access with no authentication or user interaction.

Affected products

Fortinet FortiMail 8.0.0 through 8.0.1, 7.6.0 through 7.6.6, 7.4.0 through 7.4.8, 7.2 all versions

Timeline

2026-11-10: disclosed
2026-10-05: patched: FortiMail Cloud updated to v7.6.7 GA or v8.0.2 GA

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-205

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.