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Vulnerability DatabaseCVE-2025-4920

CVE-2025-4920: 
Linux Debian vulnerability analysis and mitigation

Overview

CVE-2025-4920 is a critical security vulnerability discovered in Mozilla Firefox affecting versions below 138.0.4 and Firefox ESR below 128.10.1. The vulnerability was disclosed on May 17, 2025, and was identified by security researchers Edouard Bochin and Tao Yan from Palo Alto Networks working with Trend Micro's Zero Day Initiative (Mozilla Advisory).

Technical details

The vulnerability allows an attacker to perform an out-of-bounds read or write operation specifically targeting JavaScript Promise objects. This type of vulnerability could potentially lead to memory corruption and arbitrary code execution (NVD).

Impact

The vulnerability has been classified as having a critical impact on affected systems. The ability to perform out-of-bounds read and write operations on Promise objects could potentially lead to memory corruption, code execution, or information disclosure (Mozilla Advisory).

Mitigation and workarounds

Mozilla has released security updates to address this vulnerability. Users are advised to update to Firefox version 138.0.4 or Firefox ESR version 128.10.1 or later to mitigate this security risk (Mozilla Advisory, Mozilla Advisory ESR).

Additional resources

Source: This report was generated using AI

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