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CVE-2021-29964 A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to…
Description
A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 78.11 | earliest → < 78.11 | 78.11 |
| Firefox 89 | earliest → < 89 | 89 |
| Firefox ESR 78.11 | earliest → < 78.11 | 78.11 |
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