CVE-2025-47963: Critical Spoofing Vulnerability in Microsoft Edge (Chromium-Based)

Here’s a summary of what’s known about CVE-2025-47963 (Microsoft Edge, Chromium-based, Spoofing Vulnerability):

• Nature of Vulnerability: This is a spoofing vulnerability in Microsoft Edge (Chromium-based). Successful exploitation allows an unauthorized attacker to perform spoofing attacks over a network, potentially misleading users about the authenticity of web content or web sources.
• CWE Status: Microsoft has not mapped this issue to a specific Common Weakness Enumeration (CWE) entry.
• Severity and Exploitation: Details around the severity (such as CVSS score) and technical exploitation vectors are not public as of now. However, since this is categorized as a spoofing issue, risks typically involve phishing attempts, impersonation of trusted sites, or misleading security indicators.
• Mitigation: If you are using Microsoft Edge, ensure you have installed the latest security updates, as Microsoft will provide a patch for CVE-2025-47963. Always keep your browser up to date and be wary of suspicious links or pop-ups.
• Official Advisory: Microsoft Security Response Center (MSRC) has published the listing here:
  CVE-2025-47963 | Microsoft Edge (Chromium-based) Spoofing Vulnerability

As of now, no technical proof-of-concept or exploit details have been publicized. For more details or to track remediation, refer to the official advisory above. If you need further analysis once more details are released by Microsoft or security vendors, let me know!

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Source: MSRC Security Update Guide - Microsoft Security Response Center