vulnerability
MFSA2021-14 Thunderbird: Security Vulnerabilities fixed in Thunderbird 78.10 (CVE-2021-23995)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:H/Au:N/C:P/I:P/A:P) | Apr 19, 2021 | Apr 20, 2021 | Mar 27, 2026 |
Severity
5
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:P)
Published
Apr 19, 2021
Added
Apr 20, 2021
Modified
Mar 27, 2026
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.
Solution
mozilla-thunderbird-upgrade-78_10
Rapid7 Labs
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