CVE-2025-26643 in Edge
Summary
by MITRE • 03/07/2025
No cwe for this issue in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
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Analysis
by VulDB Data Team • 03/08/2025
This vulnerability in Microsoft Edge represents a significant security flaw that enables unauthorized attackers to conduct network-based spoofing operations. The issue stems from inadequate validation mechanisms within the browser's network communication protocols, creating opportunities for malicious actors to manipulate network traffic and deceive users into believing they are interacting with legitimate services. The vulnerability specifically affects the Chromium-based architecture of Microsoft Edge, which shares many underlying components with Google Chrome and other Chromium derivatives, making it potentially widespread across similar browser implementations.
The technical implementation of this spoofing capability likely involves exploitation of network layer protocols or certificate validation processes within the browser's security framework. Attackers can leverage this weakness to intercept and modify network traffic, potentially redirecting users to malicious websites or injecting false content into legitimate sessions. This type of vulnerability directly relates to CWE-310, which addresses cryptographic issues and weak security parameters, particularly in network communication contexts where authentication and integrity verification mechanisms fail to properly validate network sources.
From an operational perspective, this vulnerability presents substantial risk to enterprise environments where Microsoft Edge is the primary browser for business operations. The spoofing capability allows attackers to conduct man-in-the-middle attacks, potentially compromising sensitive data transmission and user credentials. Organizations may experience unauthorized access to corporate networks, data exfiltration, and service disruption through manipulated network communications. The impact extends beyond individual users to affect organizational security postures, particularly in environments where network monitoring and security controls rely on proper certificate validation and traffic integrity.
The attack surface for this vulnerability encompasses various network communication scenarios including HTTPS traffic, web application interactions, and secure protocol implementations. Network administrators must consider the potential for credential theft, session hijacking, and data manipulation through this spoofing vector. The vulnerability's exploitation requires minimal technical expertise, making it particularly dangerous for widespread adoption by threat actors. Mitigation strategies should include immediate browser updates, network traffic monitoring, and implementation of additional security controls such as strict transport security policies and enhanced certificate validation mechanisms. Organizations should also consider deploying network-based intrusion detection systems to identify and prevent spoofing attempts that may leverage this vulnerability. The incident highlights the critical importance of maintaining up-to-date browser security implementations and demonstrates how seemingly minor protocol validation flaws can create significant security risks in enterprise environments.