CVE-2021-21148

Known Exploited

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 26.53% Top 5%
KEV Since 
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory gentoo.org
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://crbug.com/1170176 permissions required
https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html release notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/ release notes vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/ release notes vendor advisory
https://www.debian.org/security/2021/dsa-4858 mailing list third party advisory vendor advisory
https://security.gentoo.org/glsa/202104-08 third party advisory vendor advisory
http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-21148?
CVE-2021-21148 has been scored as a high severity vulnerability.
How to fix CVE-2021-21148?
To fix CVE-2021-21148, 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-2021-21148 being actively exploited in the wild?
It is confirmed that CVE-2021-21148 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~27% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21148?
CVE-2021-21148 affects Google Chrome.
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