VYPR
Critical severity9.1NVD Advisory· Published Apr 29, 2025· Updated Apr 13, 2026

CVE-2025-4083

CVE-2025-4083

Description

A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.

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Affected products

28

Patches

Vulnerability mechanics

References

7

News mentions

0

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