CVE-2021-30632

Known Exploited

Description

Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 83.25% Top 5%
KEV Since 
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html release notes
https://crbug.com/1247763 permissions required
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/ release notes vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/ release notes vendor advisory
http://packetstormsecurity.com/files/172845/Chrome-JIT-Compiler-Type-Confusion.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-30632?
CVE-2021-30632 has been scored as a high severity vulnerability.
How to fix CVE-2021-30632?
To fix CVE-2021-30632, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30632 being actively exploited in the wild?
It is confirmed that CVE-2021-30632 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~83% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30632?
CVE-2021-30632 affects Google Chrome.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.