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8.8 High

CVE-2023-25737 An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined behavior

Description

An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined behavior. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Affected products and versions

Product Affected versions Fixed in
Firefox 110 earliest → < 110 110
Thunderbird 102.8 earliest → < 102.8 102.8
Firefox ESR 102.8 earliest → < 102.8 102.8

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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