vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-38506): Firefox vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Nov 3, 2021 | Nov 4, 2021 | Aug 18, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Nov 3, 2021
Added
Nov 4, 2021
Modified
Aug 18, 2025
Description
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
Solutions
ubuntu-upgrade-firefoxubuntu-upgrade-thunderbird
References
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