How severe is CVE-2021-21406?

CVE-2021-21406 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-21406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21406?

CVE-2021-21406 primarily affects Combodo Itop. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21406?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-21406 published?

CVE-2021-21406 was published on 2021-07-21 and last updated on 2026-06-17.

CVE-2021-21406

CVE-2021-21406 is a medium-severity vulnerability in Combodo Itop with a CVSS 3.x base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Medium (CVSS 3.x base score 5.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Combodo Itop
Published: 2021-07-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-21406?: 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.
How severe is CVE-2021-21406?: CVE-2021-21406 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-21406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21406?: CVE-2021-21406 primarily affects Combodo Itop. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21406 published?: CVE-2021-21406 was published on 2021-07-21 and last updated on 2026-06-17.

References

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

Affected products (3)

cpe:2.3:a:combodo:itop:*:*:*:*:*:*:*:*
cpe:2.3:a:combodo:itop:2.7.5:*:*:*:*:*:*:*
cpe:2.3:a:combodo:itop:2.7.5-1:*:*:*:*:*:*:*

More vulnerabilities in Combodo Itop

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