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CVE-2025-4092

MEDIUM CVSS: 6.5 Published: 2025-04-29 Modified: 2026-06-17

Description

Memory safety bugs present in Firefox 137 and Thunderbird 137. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 138 and Thunderbird 138.

Affected Platforms

Mozilla FirefoxMozilla Thunderbird

Weakness Type

CWE-119

References