CVE-2026-59841 Security feature bypass in FortiSIEMWindowsAgent

What is CVE-2026-59841?

CVE-2026-59841 is a medium-severity vulnerability in Fortinet FortiSIEMWindowsAgent, published on 14 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A improper restriction of communication channel to intended endpoints vulnerability in Fortinet FortiSIEMWindowsAgent 7.4.0 through 7.4.1 may allow attacker to escalation of privilege via <insert attack vector here>

Weakness: CWE-923

Which versions are affected by CVE-2026-59841?

It affects 1 product.

Products include Fortinet Fortisiem.

How do I fix CVE-2026-59841?

No fix has been published for CVE-2026-59841 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-59841 being exploited?

There is no known exploitation of CVE-2026-59841 in the wild and no public exploit code.

Other vulnerabilities in Fortinet FortiSIEMWindowsAgent

• CVE-2025-25256 Command injection in FortiSIEM Critical 9.8
• CVE-2019-16153 Hardcoded credentials in Fortinet FortiSIEM Critical 9.8
• CVE-2023-40714 Path traversal in FortiSIEM Critical 9.7
• CVE-2024-23108 Command injection in FortiSIEM Critical 9.7
• CVE-2024-23109 Command injection in FortiSIEM Critical 9.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4fpq-5jrj-phcg.