CVE-2021-21148
CVSS v3
8.8
HIGH
EPSS Score
24.9 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 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
- 2021-02-09
Frequently asked questions
What is CVE-2021-21148?
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Is CVE-2021-21148 actively exploited?
Yes. CVE-2021-21148 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-2021-21148?
CVE-2021-21148 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-21148 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2021 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).