vulnerability
MFSA2021-04 Firefox: Security Vulnerabilities fixed in Firefox ESR 78.7 (CVE-2021-23954)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jan 26, 2021 | Jan 27, 2021 | Aug 11, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jan 26, 2021
Added
Jan 27, 2021
Modified
Aug 11, 2025
Description
Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Solution
mozilla-firefox-esr-upgrade-78_7
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