CVE-2022-28285: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

When generating the assembly code for <code>MLoadTypedArrayElementHole</code>, an incorrect AliasSet was used. In conjunction with another vulnerability this could have been used for an out of bounds memory read. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.

Affected products

• Mozilla Firefox: before 99.0 (fixed in 99.0)
• Mozilla Firefox ESR: before 91.8 (fixed in 91.8)
• Mozilla Thunderbird: before 91.8 (fixed in 91.8)

Published 2022-12-22. Last modified 2026-06-17.