vulnerability
MFSA2021-39 Firefox: Security Vulnerabilities fixed in Firefox ESR 78.14 (CVE-2021-38493)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Sep 7, 2021 | Sep 8, 2021 | Aug 11, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Sep 7, 2021
Added
Sep 8, 2021
Modified
Aug 11, 2025
Description
Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.
Solution
mozilla-firefox-esr-upgrade-78_14
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