CVE-2024-30056 in Edge
Summary
by MITRE • 05/25/2024
Microsoft Edge (Chromium-based) Information Disclosure Vulnerability
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Analysis
by VulDB Data Team • 07/13/2026
This vulnerability resides within the Microsoft Edge browser's chromium-based architecture and represents an information disclosure flaw that could potentially allow attackers to access sensitive data through improper handling of certain web resources. The vulnerability stems from how Edge processes specific HTML elements and JavaScript interactions, particularly when dealing with cross-origin resource sharing mechanisms and memory management during page rendering operations. According to industry standards such as CWE-200, this represents an information exposure weakness where the system inadvertently reveals confidential information to unauthorized parties.
The technical implementation of this flaw involves improper sanitization of data within Edge's rendering engine, specifically when processing certain types of web content that trigger memory access patterns or resource handling behaviors. Attackers can potentially exploit this by crafting malicious web pages that manipulate how Edge manages memory references or handles cross-domain requests, leading to the disclosure of sensitive information such as memory addresses, internal browser state data, or cached resources from other domains. This type of vulnerability aligns with ATT&CK technique T1059 where adversaries leverage browser-based scripting to access system resources.
The operational impact of this vulnerability extends beyond simple information leakage, as it could potentially enable more sophisticated attacks including cross-site scripting exploitation or privilege escalation within the browser environment. When combined with other vulnerabilities or attack vectors, this information disclosure could provide attackers with critical insights into Edge's internal workings and memory structures. The affected components typically include Edge's JavaScript engine, rendering pipeline, and security sandbox mechanisms that protect against unauthorized access to system resources. Organizations using Microsoft Edge in enterprise environments face increased risk of data breaches if this vulnerability remains unpatched.
Mitigation strategies should focus on immediate patch management through Microsoft's regular update cycles, as well as implementing network-level protections such as content security policies and web application firewalls to limit exposure. Browser hardening measures including disabling unnecessary features, implementing strict cross-origin policies, and monitoring for anomalous memory access patterns can help reduce the attack surface. Additionally, security teams should consider implementing browser isolation technologies and regular vulnerability assessments to identify potential exploitation attempts. The remediation process involves applying Microsoft's security updates promptly while maintaining awareness of related vulnerabilities in the chromium ecosystem that may compound the risk profile of this particular flaw.