CVE-2021-22921
CVSS v3
7.8
HIGH
EPSS Score
7.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Node.js before 16.4.1, 14.17.2, and 12.22.2 is vulnerable to local privilege escalation attacks under certain conditions on Windows platforms. More specifically, improper configuration of permissions in the installation directory allows an attacker to perform two different escalation attacks: PATH and DLL hijacking.
Technical details
- Published
- 2021-07-12
Frequently asked questions
What is CVE-2021-22921?
Node.js before 16.4.1, 14.17.2, and 12.22.2 is vulnerable to local privilege escalation attacks under certain conditions on Windows platforms. More specifically, improper configuration of permissions in the installation directory allows an attacker to perform two different escalation attacks: PATH and DLL hijacking.
Is CVE-2021-22921 actively exploited?
Active exploitation of CVE-2021-22921 has not been confirmed. Its EPSS score was 7.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-22921?
CVE-2021-22921 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-22921 affecting your environment?
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