How severe is CVE-2021-23379?

CVE-2021-23379 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-23379 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23379?

CVE-2021-23379 affects Portkiller Project Portkiller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23379?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-23379 published?

CVE-2021-23379 was published on 2021-04-18 and last updated on 2026-06-17.

CVE-2021-23379

CVE-2021-23379 is a high-severity vulnerability in Portkiller Project Portkiller with a CVSS 3.x base score of 7.3. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Portkiller Project Portkiller
Published: 2021-04-18
Last modified: 2026-06-17

Description

This affects all versions of package portkiller. If (attacker-controlled) user input is given, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization.

Frequently asked questions

What is CVE-2021-23379?: This affects all versions of package portkiller. If (attacker-controlled) user input is given, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization.
How severe is CVE-2021-23379?: CVE-2021-23379 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-23379 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23379?: CVE-2021-23379 affects Portkiller Project Portkiller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23379?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-23379 published?: CVE-2021-23379 was published on 2021-04-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:portkiller_project:portkiller:*:*:*:*:*:node.js:*:*

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