vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-23995): Firefox vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:H/Au:N/C:P/I:P/A:P) | Apr 27, 2021 | Apr 27, 2021 | Aug 18, 2025 |
Severity
5
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:P)
Published
Apr 27, 2021
Added
Apr 27, 2021
Modified
Aug 18, 2025
Description
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Solutions
ubuntu-upgrade-firefoxubuntu-upgrade-thunderbird
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