CVE-2026-4692

CRITICAL

RHSA-2026:6342 Red Hat Security Advisory: thunderbird security update

Details

CVSS v3: 10.0
NVD published: 2026-03-24 13:16:05
EPSS: <0.1% probability · 6.9th percentile — 2026-03-31
Affected versions: cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
Summary: Sandbox escape in the Responsive Design Mode component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
Remediation: Not available in our cache.
Exploit info: Not available in our cache.

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Information is aggregated from multiple authoritative sources for convenience; verify with NVD and vendors before operational decisions.