vulnerability
MFSA2023-56 Firefox: Security Vulnerabilities fixed in Firefox 121 (CVE-2023-6866)
| 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
TypedArrays can be fallible and lacked proper exception handling. This could lead to abuse in other APIs which expect TypedArrays to always succeed. This vulnerability affects Firefox < 121.
Solution
mozilla-firefox-upgrade-121_0
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