Unrated severityCISA KEVNVD Advisory· Published Apr 24, 2020· Updated Oct 21, 2025
CVE-2020-6819
CVE-2020-6819
Description
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Affected products
3- Range: unspecified
- Range: unspecified
- Mozilla/Firefox ESRv5Range: unspecified
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- usn.ubuntu.com/4335-1/mitrevendor-advisoryx_refsource_UBUNTU
- bugzilla.mozilla.org/show_bug.cgimitrex_refsource_MISC
- www.mozilla.org/security/advisories/mfsa2020-11/mitrex_refsource_MISC
- www.mozilla.org/security/advisories/mfsa2020-14/mitrex_refsource_MISC
News mentions
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