CVE-2020-12419

Description

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.62%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory gentoo.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox ESR
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2020-24/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-26/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2020-25/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1643874 vendor advisory issue tracking
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html vendor advisory mailing list third party advisory
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://usn.ubuntu.com/4421-1/ third party advisory vendor advisory
https://security.gentoo.org/glsa/202007-09 third party advisory vendor advisory
https://security.gentoo.org/glsa/202007-10 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-12419?
CVE-2020-12419 has been scored as a high severity vulnerability.
How to fix CVE-2020-12419?
To fix CVE-2020-12419, 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-2020-12419 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-12419 is being actively exploited. 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-2020-12419?
CVE-2020-12419 affects Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird.
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.