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CVE-2019-9810 Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds…

Description

Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.

Affected products and versions

Product Affected versions Fixed in
Firefox 66.0 earliest → < 66.0.1 66.0.1
Firefox ESR 60.6 earliest → < 60.6.1 60.6.1
Thunderbird 60.6 earliest → < 60.6.1 60.6.1

Other CVEs of Firefox

The 2221 CVEs of Firefox →
CVE-2026-120572 Incorrect boundary conditions in the Layout: Block and Inline component 8.8 High CVE-2026-118027 Frame poisoning in the Layout component 9.1 Critical CVE-2026-118025 Other issue in the SVG component 8.8 High CVE-2026-118026 Invalid pointer in the JavaScript: GC component 8.8 High
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