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A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select element in the options collection. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.
Base Score
9.8
| Base Score | 9.8 |
|---|---|
| Vector String | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Base Severity | Critical |
| Version | 3.0 |
| Attack Vector (AV) | NETWORK |
