CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component
Published Sep 15, 2026
·Updated
Sandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
Affected Software
2 affected components
Mozilla Firefox<156
Mozilla Firefox ESR<153.3
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 156 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 153.3
Event History
Sep 15, 2026
CVE Published
via MITRE·12:34 PM
Data Sourced
via MITRE·12:34 PM
Description
Frequently Asked Questions
1
Which Firefox releases contain the fix?
Mozilla fixed this issue in Firefox 156 and Firefox ESR 153.3.
2
What component is involved in this vulnerability?
The issue is in Firefox's WebRTC component and involves incorrect boundary conditions that can permit a sandbox escape.