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CVE-2021-21207

HIGHCVSS 8.6/10EPSS 0.94%

Last modified

CVE-2021-21207 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

Metrics

CVSS 3.1
8.6/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability
0.94%

56.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GoogleChrome< 90.0.4430.72
DebianDebian Linux10.0
FedoraprojectFedora32
FedoraprojectFedora33
FedoraprojectFedora34

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-21207?
Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.
How severe is CVE-2021-21207?
CVE-2021-21207 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21207?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21207?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST