CVE-2023-36741 in Edge
Summary
by MITRE • 08/26/2023
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
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Analysis
by VulDB Data Team • 04/22/2025
This vulnerability represents a critical elevation of privilege flaw in Microsoft Edge browser that operates within the Chromium-based architecture. The issue stems from insufficient validation mechanisms within the browser's security model, specifically affecting how the renderer process handles certain memory operations and object lifecycles. Attackers can exploit this weakness to escalate their privileges from standard user level to system level access, bypassing standard security boundaries that normally protect against such unauthorized access. The vulnerability resides in the complex interaction between the browser's sandboxing mechanisms and its underlying Chromium components, creating a pathway for malicious code execution that can ultimately compromise the entire operating system.
The technical exploitation of CVE-2023-36741 involves leveraging a memory corruption vulnerability within the browser's rendering engine that allows attackers to manipulate object references and memory layouts in ways that should not be possible under normal operation. This flaw typically manifests through carefully crafted web content that triggers specific code paths in the browser's JavaScript engine or rendering components. The vulnerability is particularly concerning because it operates at a level where the browser's security boundaries are designed to prevent such escalation, yet the flaw creates an unexpected entry point for privilege elevation. According to CWE classification, this represents a weakness in the design of privilege management controls, specifically categorized under improper privilege management and memory safety violations.
The operational impact of this vulnerability extends beyond simple browser compromise, as successful exploitation can lead to complete system takeover and persistent access to victim machines. Attackers can leverage the elevated privileges to install malware, modify system files, access sensitive data, and establish backdoors for continued access. The vulnerability affects multiple Windows versions and can be exploited through various attack vectors including malicious websites, phishing campaigns, or drive-by downloads. Organizations running affected versions of Microsoft Edge are particularly at risk, as the browser's widespread adoption means that exploitation can quickly scale across large user bases. This vulnerability directly aligns with attack patterns documented in the MITRE ATT&CK framework under privilege escalation techniques and can be classified as a system-level compromise that bypasses standard endpoint protection mechanisms.
Mitigation strategies for CVE-2023-36741 primarily focus on immediate patch deployment and operational security enhancements. Microsoft has released security updates that address the underlying memory management flaws and strengthen the browser's privilege boundary enforcement. Organizations should implement immediate patch management protocols to ensure all affected Edge installations receive the latest security updates. Additionally, network administrators should consider implementing browser lockdown policies and restricting access to potentially malicious websites through advanced web filtering solutions. The vulnerability highlights the importance of maintaining current security patches and demonstrates how even widely trusted browser applications can contain critical flaws that require immediate attention. Security teams should monitor for exploitation attempts through network traffic analysis and endpoint detection systems, as the attack patterns for such vulnerabilities typically exhibit specific network behavior characteristics that can be detected and blocked.