EUVD-2026-26058CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
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6DescriptionNVD
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox ESR 140.10.1.
AnalysisAI
Sandbox escape in Mozilla Firefox's WebRTC networking component allows remote attackers to break out of browser process isolation and execute code outside the sandbox with high integrity and confidentiality impact. Firefox ESR 140.10.1 fixes this critical boundary condition flaw (CWE-120). …
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RemediationAI
Within 24 hours: Identify all Firefox installations across the organization using asset management tools and disable WebRTC in Firefox preferences (about:config → media.peerconnection.enabled = false) as interim protection. Within 7 days: Deploy Firefox ESR 140.10.1 or later via centralized patch management to all affected systems; verify deployment completion. …
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