vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-23997): Firefox vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Apr 26, 2021 | Apr 27, 2021 | Aug 18, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Apr 26, 2021
Added
Apr 27, 2021
Modified
Aug 18, 2025
Description
Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.
Solution
ubuntu-upgrade-firefox
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