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CVE-2026-100786

9.6 CRITICAL

Published 2026-09-29 · Updated 2026-09-29

AI risk analysis

Summary
This vulnerability allows an attacker to escape the sandbox by exploiting a use-after-free flaw in the Graphics component, leading to potential code execution.
Exploitability
Exploitation requires specific conditions and a detailed understanding of the affected Graphics component, making it moderately difficult.
Blast radius
If exploited, this could lead to full system compromise, as the sandbox escape could be leveraged to execute arbitrary code.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, or Firefox ESR 140.17 or later.
sandbox-escapecode-executionwebbrowser

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

NVD description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weaknesses

CWE-416

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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