CVE-2021-21151
CVSS v3
9.6
CRITICAL
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Use after free in Payments in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.
Technical details
- Published
- 2021-02-22
Frequently asked questions
What is CVE-2021-21151?
Use after free in Payments in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.
Is CVE-2021-21151 actively exploited?
Active exploitation of CVE-2021-21151 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21151?
CVE-2021-21151 has a CVSS v3 base score of 9.6 (CRITICAL severity).
Is CVE-2021-21151 affecting your environment?
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