CVE-2026-92049 is a vulnerability in Mozilla Firefox
Published on September 15, 2026
Use-after-free in the Widget: Win32 component
Use-after-free in the Widget: Win32 component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
Products Associated with CVE-2026-92049
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Affected Versions
Mozilla Firefox:- Version 153.3, <= 153.* is unaffected.
- Version 156, <= * is unaffected.