vulnerability
MFSA2023-56 Firefox: Security Vulnerabilities fixed in Firefox 121 (CVE-2023-6859)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Dec 19, 2023 | Dec 20, 2023 | Aug 11, 2025 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Dec 19, 2023
Added
Dec 20, 2023
Modified
Aug 11, 2025
Description
A use-after-free condition affected TLS socket creation when under memory pressure. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
Solution
mozilla-firefox-upgrade-121_0
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