vulnerability
MFSA2021-36 Thunderbird: Security Vulnerabilities fixed in Thunderbird 91 (CVE-2021-29984)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Aug 17, 2021 | Sep 16, 2021 | Apr 29, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Aug 17, 2021
Added
Sep 16, 2021
Modified
Apr 29, 2026
Description
Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
Solution
mozilla-thunderbird-upgrade-91_0
Rapid7 Labs
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