CVE-2021-23555

Name: CVE-2021-23555
Creator: NVD / NIST
Published: 2022-02-11T20:15:07.44+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.70%

Last modified Jun 17, 2026

CVE-2021-23555 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.70% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.70%

84.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Vm2 Project	Vm2	< 3.9.6

References

https://github.com/patriksimek/vm2/commit/532120d5cdec7da8225fc6242e154ebabc63fe4dPatch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-VM2-2309905Exploit, Patch, Third Party Advisory
https://github.com/patriksimek/vm2/commit/532120d5cdec7da8225fc6242e154ebabc63fe4dPatch, Third Party Advisory
https://snyk.io/vuln/SNYK-JS-VM2-2309905Exploit, Patch, Third Party Advisory

Timeline

Published: Feb 11, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23555?

How severe is CVE-2021-23555?

CVE-2021-23555 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23555?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23555?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST