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CVE-2021-26104

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-04-06 · updated 2026-06-17
• Weakness: CWE-78

Description

Multiple OS command injection (CWE-78) vulnerabilities in the command line interface of FortiManager 6.2.7 and below, 6.4.5 and below and all versions of 6.2.x, 6.0.x and 5.6.x, FortiAnalyzer 6.2.7 and below, 6.4.5 and below and all versions of 6.2.x, 6.0.x and 5.6.x, and FortiPortal 5.2.5 and below, 5.3.5 and below and 6.0.4 and below may allow a local authenticated and unprivileged user to execute arbitrary shell commands as root via specifically crafted CLI command parameters.

Affected products

• Fortinet FortiAnalyzer: from 5.6.0 before 6.0.11; from 6.2.0 before 6.2.8; from 6.4.0 before 6.4.6 — fixed in 6.0.11, 6.2.8, 6.4.6
• Fortinet FortiManager: from 5.6.0 before 6.0.11; from 6.2.0 before 6.2.8; from 6.4.0 before 6.4.6 — fixed in 6.0.11, 6.2.8, 6.4.6
• Fortinet FortiPortal: before 5.2.6; from 5.3.0 before 5.3.6; from 6.0.0 before 6.0.5 — fixed in 5.2.6, 5.3.6, 6.0.5

How to fix

Upgrade to a fixed version: Fortinet FortiAnalyzer 6.0.11, 6.2.8, 6.4.6; Fortinet FortiManager 6.0.11, 6.2.8, 6.4.6; Fortinet FortiPortal 5.2.6, 5.3.6, 6.0.5. Check the vendor advisory for mitigations.

References

• https://fortiguard.com/advisory/FG-IR-21-037
• https://github.com/orangecertcc/security-research/security/advisories/GHSA-f73m-fvj3-m2pm
• https://fortiguard.com/advisory/FG-IR-21-037
• https://github.com/orangecertcc/security-research/security/advisories/GHSA-f73m-fvj3-m2pm

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