CVE-2020-12426

Public Exploit

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 77. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 78.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.86% Top 30%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org 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/mfsa2020-24/ vendor advisory
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1608068%2C1609951%2C1631187%2C1637682 patch exploit vendor advisory issue tracking
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html vendor advisory mailing list third party advisory
https://security.gentoo.org/glsa/202007-10 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-12426?
CVE-2020-12426 has been scored as a high severity vulnerability.
How to fix CVE-2020-12426?
To fix CVE-2020-12426, 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-2020-12426 being actively exploited in the wild?
It is possible that CVE-2020-12426 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-12426?
CVE-2020-12426 affects Mozilla Firefox.
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