CVE-2021-30571
CVSS v3
9.6
CRITICAL
EPSS Score
1.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Insufficient policy enforcement in DevTools in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted HTML page.
Technical details
- Published
- 2021-08-03
Frequently asked questions
What is CVE-2021-30571?
Insufficient policy enforcement in DevTools in Google Chrome prior to 92.0.4515.107 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted HTML page.
Is CVE-2021-30571 actively exploited?
Active exploitation of CVE-2021-30571 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-30571?
CVE-2021-30571 has a CVSS v3 base score of 9.6 (CRITICAL severity).
Is CVE-2021-30571 affecting your environment?
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