THREATPORT/VULNERABILITY/CVE-2021-21372
HIGH SEVERITY

CVE-2021-21372

Nim vulnerability

CVSS
8.3
EPSS
3.6%
EPSS pct
88th
Exploited
No known
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.
Affected vendor
Nim Lang
Affected product
Nim
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness type (CWE)
Published
2021-03-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2021-21372

  • Confirm whether Nim Lang Nim is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-21372.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-21372

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-21372 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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