CVE-2026-124899 · Runtime
NO FIX YET · SEE WHAT TO DO
A use-after-free bug in Firefox's Layout: Text and Fonts component lets memory be reused after it is freed. The sources do not state what an attacker can do beyond that.
first public Nov 10, 2026 · 1 source
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Anyone running a Firefox build older than the fixed releases on its branch. The sources do not say whether the flaw needs a particular page, setting or user action to trigger, and they do not describe the attacker's reach.
Not affected if already-on-fixed-version
Who cares browser, firefox
160115.45153.7Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 160, Firefox ESR 115.45, and Firefox ESR 153.7.
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