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HIGH

CVE-2021-21372

CVSS v3

8.8

HIGH

EPSS Score

3.6 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2021-21372 Red Hat Product Security

    nim: doCmd can be leveraged to execute arbitrary commands

Full record on NVD

Description

Nimble is a package manager for the Nim programming language. In Nim release version before versions 1.2.10 and 1.4.4, Nimble doCmd is used in different places and can be leveraged to execute arbitrary commands. An attacker can craft a malicious entry in the packages.json package list to trigger code execution.

Technical details

Published
2021-03-26

Frequently asked questions

What is CVE-2021-21372?

Nimble is a package manager for the Nim programming language. In Nim release version before versions 1.2.10 and 1.4.4, Nimble doCmd is used in different places and can be leveraged to execute arbitrary commands. An attacker can craft a malicious entry in the packages.json package list to trigger code execution.

Is CVE-2021-21372 actively exploited?

Active exploitation of CVE-2021-21372 has not been confirmed. Its EPSS score was 3.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21372?

CVE-2021-21372 has a CVSS v3 base score of 8.8 (HIGH severity).

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