CVE-2026-100811

Summary

This flaw allows attackers to escape the sandbox by exploiting a use-after-free vulnerability in the DOM: Core & HTML component, leading to potential code execution.

Exploitability

Exploitation requires specific conditions and is moderately difficult, as it involves precise timing and control over memory management.

Blast radius

If exploited, this vulnerability could lead to full code execution on the affected system, potentially allowing attackers to install programs, view, change, and delete data, or create new accounts with full user rights.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to Firefox ESR 153.4, Firefox 157, or Firefox ESR 140.17 or later.

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.