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Vulnerability DatabaseCVE-2025-5268

CVE-2025-5268: 
Mozilla Firefox vulnerability analysis and mitigation

Overview

Memory safety bugs have been identified in Firefox 138, Thunderbird 138, Firefox ESR 128.10, and Thunderbird 128.10, tracked as CVE-2025-5268. The vulnerability was discovered by the Mozilla Fuzzing Team and Masayuki Nakano, and was officially disclosed on May 27, 2025. These bugs showed evidence of memory corruption that could potentially be exploited to execute arbitrary code (Mozilla Advisory, NVD).

Technical details

The vulnerability has been assigned a CVSS v3.1 base score of 6.5 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. The bugs primarily affect memory safety mechanisms in the affected versions of Firefox and Thunderbird, with evidence suggesting potential memory corruption issues (NVD).

Impact

The vulnerability could potentially allow attackers to execute arbitrary code on affected systems if successfully exploited. The memory corruption issues present in the affected versions could lead to unauthorized code execution, potentially compromising system security (Mozilla Advisory, GBHackers).

Mitigation and workarounds

Mozilla has addressed these memory safety bugs in Firefox 139, Thunderbird 139, Firefox ESR 128.11, and Thunderbird 128.11. Users are strongly advised to update to these latest versions to protect against potential exploitation (Mozilla Advisory, Mozilla ESR Advisory).

Additional resources

Source: This report was generated using AI

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