CVE-2026-4688 - Vulnerability Analysis
CriticalCVSS: 10.0Last Updated: March 24, 2026
Firefox - Sandbox Escape
Published: March 24, 2026Updated: March 24, 2026Remote Exploitable
Overview
Firefox < 149 and Firefox ESR < 140.9 contain a sandbox escape caused by use-after-free in the Disability Access APIs component, letting attackers escape sandbox restrictions, exploit requires no special privileges.
Severity & Score
Severity: Critical
CVSS Score: 10.0
Impact
Attackers can escape sandbox restrictions, potentially leading to full system compromise.
Mitigation
Update to Firefox 149 and Firefox ESR 140.9 or later.
References
Related Resources
Details
- CVE ID
- CVE-2026-4688
- Severity
- Critical
- CVSS Score
- 10.0
- Type
- use_after_free
- Status
- confirmed
CWE
- CWE-416
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H