CVE-2021-29972

Public Exploit

Description

A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library. Updating the library resolved the issue, and may have remediated other, unknown security vulnerabilities as well. This vulnerability affects Firefox < 90.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.47%
Vendor Advisory gentoo.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2021-28/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1696816 vendor advisory issue tracking exploit
https://security.gentoo.org/glsa/202202-03 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-29972?
CVE-2021-29972 has been scored as a high severity vulnerability.
How to fix CVE-2021-29972?
To fix CVE-2021-29972, 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-2021-29972 being actively exploited in the wild?
It is possible that CVE-2021-29972 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29972?
CVE-2021-29972 affects Mozilla Firefox.
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