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.
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History
Wed, 22 Oct 2025 00:15:00 +0000
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Tue, 21 Oct 2025 20:30:00 +0000
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Tue, 21 Oct 2025 19:30:00 +0000
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Fri, 07 Feb 2025 13:15:00 +0000
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Wed, 14 Aug 2024 00:45:00 +0000
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Status: PUBLISHED
Assigner: mozilla
Published: 2020-04-24T15:56:56.000Z
Updated: 2025-10-21T23:35:45.566Z
Reserved: 2020-01-10T00:00:00.000Z
Link: CVE-2020-6819
Updated: 2024-08-04T09:11:05.160Z
Status : Modified
Published: 2020-04-24T16:15:13.370
Modified: 2025-10-22T00:17:11.217
Link: CVE-2020-6819