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Fencer Vulns
medium 5.8

CVE-2021-21406 json

Command Injection vulnerability in the Setup Wizard

published 2021-07-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8699

cvss
5.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

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.

Patch / fix

  • combodo itop 2.7.4

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.8 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Combodo iTop

Classification

Weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.