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8.8 High

CVE-2026-109743 Privilege escalation in the Panning and Zooming component

Description

Privilege escalation in the Panning and Zooming component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Affected products and versions

Product Affected versions Fixed in
Firefox 158 earliest → < 158 158
Firefox 153.5 earliest → < 153.5 153.5
Thunderbird 158 earliest → < 158 158
Thunderbird 153.5 earliest → < 153.5 153.5

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-2026-118024 Use-after-free in the Graphics: Text component 8.8 High
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