Introduction
Remote code execution vulnerabilities in browsers can enable attackers to compromise endpoints through malicious web content, impacting both enterprise and consumer environments. Microsoft Edge, built on the Chromium engine, is widely deployed and regularly targeted by both opportunistic and advanced threat actors. CVE-2025-59251, disclosed on September 24, 2025, is a newly identified remote code execution vulnerability in Microsoft Edge (Chromium-based) with a CVSS score of 7.6, highlighting its potential security impact.
Technical Information
CVE-2025-59251 is classified as a remote code execution vulnerability in Microsoft Edge (Chromium-based). The vulnerability is referenced in the Microsoft Security Update Guide, but as of this writing, no public technical details or root cause explanations have been disclosed. There are no available code snippets, exploitation methods, or affected code paths in public sources. Previous remote code execution vulnerabilities in Edge have involved memory corruption, type confusion, or improper access control in the Chromium engine, but there is no confirmation that CVE-2025-59251 follows these patterns.
Affected Systems and Versions
- Product: Microsoft Edge (Chromium-based)
- Specific affected versions: Not publicly disclosed as of September 24, 2025
- Version ranges: Not specified in available sources
- Vulnerable configurations: Not specified
Vendor Security History
Microsoft Edge has experienced multiple high-severity vulnerabilities in 2025, including several remote code execution issues. Microsoft typically releases security updates for Edge within days of public disclosure and has a mature vulnerability management process. The vendor regularly incorporates Chromium security fixes and communicates exploitation status transparently. However, the frequency of browser vulnerabilities underscores the ongoing challenge of securing complex web-facing applications.