CVE-2020-12419

HIGH 8.8CVE-2020-12419 · Published 09/07/2020 · updated 17/06/2026

In short

CVE-2020-12419 is a HIGH (CVSS 8.8) vulnerability affecting firefox (mozilla), firefox esr (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 2.3%, higher than 83.5% of all vulnerabilities.
Fix: update to 78.0, 68.10, 68.10.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 78.0`	`78.0`
firefox esr mozilla	`< 68.10`	`68.10`
thunderbird mozilla	`< 68.10.0`	`68.10.0`

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.

References

lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html · Mailing List
lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html · Mailing List
lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html · Mailing List
lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html · Mailing List
bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
security.gentoo.org/glsa/202007-09 · Third Party Advisory
security.gentoo.org/glsa/202007-10 · Third Party Advisory
usn.ubuntu.com/4421-1 · Third Party Advisory
mozilla.org/security/advisories/mfsa2020-24 · Vendor Advisory
mozilla.org/security/advisories/mfsa2020-25 · Vendor Advisory
mozilla.org/security/advisories/mfsa2020-26

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Package

Affected versions

Patched versions

firefox

mozilla

< 78.0

78.0

firefox esr

mozilla

< 68.10

68.10

thunderbird

mozilla

< 68.10.0

68.10.0

Description

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