CVE-2026-58296 in Edge
Summary
by MITRE • 07/04/2026
Exposure of private personal information to an unauthorized actor in Microsoft Edge for Android allows an unauthorized attacker to disclose information over a network.
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Analysis
by VulDB Data Team • 07/04/2026
This vulnerability represents a critical privacy and security flaw in Microsoft Edge for Android that enables unauthorized disclosure of private personal information through network channels. The issue stems from insufficient access controls and inadequate data protection mechanisms within the browser's implementation, allowing malicious actors to intercept and exfiltrate sensitive user data without proper authorization. The vulnerability manifests when the browser fails to properly isolate or encrypt personal information during network transmission, creating an attack surface that adversaries can exploit to gain unauthorized access to user data.
The technical nature of this flaw involves inadequate session management and data handling protocols within the mobile browser's architecture. Microsoft Edge for Android likely employs standard web browsing mechanisms that do not sufficiently protect personal information from being exposed during normal operation or under specific network conditions. This weakness creates opportunities for man-in-the-middle attacks, network sniffing operations, or other forms of information disclosure where attackers can capture and analyze data transmitted between the browser and remote servers. The vulnerability may be related to improper implementation of secure communication protocols or failure to apply appropriate encryption standards during data transmission.
The operational impact of this vulnerability extends beyond simple data exposure to encompass potential identity theft, financial fraud, and privacy violations for affected users. When personal information such as browsing history, login credentials, communication data, or other sensitive user details becomes accessible to unauthorized parties, it creates cascading security risks that can compromise entire digital ecosystems. Users who rely on Microsoft Edge for Android for their daily web activities face significant risk of having their private information collected and potentially misused by threat actors. The vulnerability affects not only individual privacy but also organizational security posture when users access corporate networks or handle sensitive business information through the affected browser.
Mitigation strategies should focus on immediate patch deployment and enhanced network monitoring to detect potential exploitation attempts. Organizations should implement network segmentation, enhanced firewall rules, and intrusion detection systems to identify suspicious data flows that may indicate exploitation of this vulnerability. Users should be advised to update their browsers immediately to the latest versions containing security patches and consider using additional privacy protection tools such as virtual private networks or secure browsing proxies. Security teams should also conduct thorough vulnerability assessments of their mobile browser usage policies and implement mandatory security training for personnel who handle sensitive information through mobile devices. This vulnerability aligns with CWE-200 (Information Exposure) and may map to ATT&CK technique T1567 (Exfiltration Over Web Service) in threat modeling frameworks, emphasizing the need for comprehensive defensive measures across multiple security domains including network security, application security, and user awareness training programs.