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CVE-2018-12376 Memory safety bugs present in Firefox 61 and Firefox ESR 60.1

Description

Memory safety bugs present in Firefox 61 and Firefox ESR 60.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.

Affected products and versions

Product Affected versions Fixed in
Firefox 62 earliest → < 62 62
Firefox ESR 60.2 earliest → < 60.2 60.2
Thunderbird 60.2 earliest → < 60.2.1 60.2.1

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-2026-118026 Invalid pointer in the JavaScript: GC component 8.8 High CVE-2026-118025 Other issue in the SVG component 8.8 High
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