HarborGuard / CVE
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CRITICALCVE-2026-4692Published Modified CNA mozilla

CVE-2026-4692: Sandbox escape in the Responsive Design Mode component

Sandbox escape in the Responsive Design Mode component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

Metrics

CVSS v3.1
9.6
Severity
CRITICAL
Fixed in
115.34
Affected Products
2

Fix available

115.34140.9149
Affected packages
  • Mozilla / Firefox
    Fixed in 115.34, 140.9, 149
  • Mozilla / Thunderbird
    Fixed in 140.9, 149
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References