CVE-2025-21342
vulnerability analysis and mitigation

Overview

CVE-2025-21342 is a Remote Code Execution vulnerability affecting Microsoft Edge (Chromium-based). The vulnerability was initially disclosed on February 6, 2025, and was assigned a high severity CVSS base score of 8.8. The affected software versions include Microsoft Edge Chromium up to version 133.0.3065.51 (NVD, Microsoft Learn).

Technical details

The vulnerability is classified as CWE-843 (Access of Resource Using Incompatible Type - 'Type Confusion'). It has been assigned a CVSS v3.1 vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and user interaction required for exploitation (NVD).

Impact

If successfully exploited, this vulnerability could allow an attacker to achieve remote code execution with high impacts on confidentiality, integrity, and availability of the affected system. The CVSS score of 8.8 indicates severe potential consequences if exploited (NVD).

Mitigation and workarounds

Microsoft has released a security update to address this vulnerability in Microsoft Edge version 133.0.3065.51. Users are advised to update to the latest version of Microsoft Edge to mitigate this vulnerability (Microsoft Learn).

Additional resources


SourceThis report was generated using AI

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