CriticalCritical vulnerability

CVE-2026-100762 (CVSS 9.6)

NVD · officialPublished Sep 29, 2026Risk 50/100

Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Technical details

CVSS

9.6

AV:NetworkAC:LowPR:NoneUI:RequiredC:HighI:HighA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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