CVE-2021-21220
CVSS v3
8.8
HIGH
EPSS Score
92.6 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CISA Known Exploited Vulnerability
- Date Added
- 2021-11-03
- Patch Due Date
- 2021-11-17
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-04-26
Frequently asked questions
What is CVE-2021-21220?
Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Is CVE-2021-21220 actively exploited?
Yes. CVE-2021-21220 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2021-11-17.
What is the CVSS score for CVE-2021-21220?
CVE-2021-21220 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-21220 affecting your environment?
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