A crafted CMS message could have been processed incorrectly, leading to an invalid memory read, and potentially further memory corruption. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10. The Mozilla Foundation Security Advisory describes this flaw as: A crafted CMS message could have been processed incorrectly, leading to an invalid memory read, and potentially further memory corruption.
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– Scott Cheney, Manager of Information Security, Sierra View Medical Center