CVE-2021-21406: Command Injection vulnerability in the Setup Wizard

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-21 · updated 2026-06-17
Weakness: CWE-77

Description

Combodo iTop is an open source, web based IT Service Management tool. In versions prior to 2.7.4, there is a command injection vulnerability in the Setup Wizard when providing Graphviz executable path. The vulnerability is patched in version 2.7.4 and 3.0.0.

Affected products

Combodo iTop: before 2.7.4; 2.7.5, 2.7.5-1 — fixed in 2.7.4

How to fix

Upgrade to a fixed version: Combodo iTop 2.7.4. Check the vendor advisory for mitigations.

References

https://github.com/Combodo/iTop/security/advisories/GHSA-pf95-6h7q-q85x
https://github.com/Combodo/iTop/security/advisories/GHSA-pf95-6h7q-q85x

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