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CRITICAL

CVE-2021-23555

CVSS v3

9.8

CRITICAL

EPSS Score

2.9 %

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.

Packages

  • vm2npmall versions · fixed in 3.9.6

Vendor advisories

  • CVE-2021-23555 Red Hat Product Security1 known affected

    vm2: vulnerable to Sandbox Bypass

    rhacm2/console-rhel8 as a component of Red Hat Advanced Cluster Management for Kubernetes 2

  • RHSA-2022:1681 Red Hat Product Security221 products fixed

    Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.4.4 security updates and bug fixes

Full record on NVD

Description

The package vm2 before 3.9.6 are vulnerable to Sandbox Bypass via direct access to host error objects generated by node internals during generation of a stacktraces, which can lead to execution of arbitrary code on the host machine.

Technical details

Published
2022-02-11

Frequently asked questions

What is CVE-2021-23555?

The package vm2 before 3.9.6 are vulnerable to Sandbox Bypass via direct access to host error objects generated by node internals during generation of a stacktraces, which can lead to execution of arbitrary code on the host machine.

Is CVE-2021-23555 actively exploited?

Active exploitation of CVE-2021-23555 has not been confirmed. Its EPSS score was 2.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23555?

CVE-2021-23555 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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