CVE-2017-8548 in Edge
Summary
by MITRE
Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an attacker to obtain information to further compromise the user's system when Microsoft Edge improperly handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8499, CVE-2017-8520, CVE-2017-8521, and CVE-2017-8549.
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Analysis
by VulDB Data Team • 12/14/2025
The vulnerability identified as CVE-2017-8548 represents a critical memory corruption flaw within Microsoft Edge's scripting engine that affects multiple Windows 10 versions including Gold, 1511, 1607, and 1703, as well as Windows Server 2016. This vulnerability falls under the broader category of scripting engine flaws that have historically been exploited for remote code execution and privilege escalation attacks. The flaw manifests when Microsoft Edge improperly handles objects in memory, creating opportunities for attackers to gather information that could lead to further system compromise. Security researchers have categorized this vulnerability as a memory corruption issue that aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write vulnerabilities that can result in arbitrary code execution.
The technical exploitation of this vulnerability occurs through the manipulation of memory objects within Edge's JavaScript engine, specifically targeting how the browser processes and manages memory during script execution. Attackers can craft malicious web content that triggers the memory corruption when Edge attempts to handle specific object references, leading to information disclosure that can be leveraged for more sophisticated attacks. This particular flaw demonstrates the inherent risks associated with complex scripting engines that must balance performance optimization with memory safety. The vulnerability's impact is particularly severe because it operates at the browser level where users frequently interact with untrusted content, making it an attractive target for threat actors seeking to establish persistent access to compromised systems.
From an operational perspective, this vulnerability creates significant risk for enterprise environments where Windows 10 systems are deployed across various organizational levels. The attack surface is broad since Edge is the default browser on Windows 10 systems and users regularly access web content from potentially malicious sources. The information disclosure aspect of this vulnerability means that attackers who successfully exploit it can gather system information that enables them to craft more targeted attacks against the compromised host. This aligns with tactics described in the MITRE ATT&CK framework under T1059 for command and script interpreter execution, where attackers can use the gathered information to establish more sophisticated attack chains. Organizations running affected Windows versions are particularly vulnerable because the vulnerability affects the core browser functionality that users rely on for daily operations.
The recommended mitigation strategies for CVE-2017-8548 include immediate deployment of Microsoft's security patches and updates, which address the memory corruption issues within Edge's scripting engine. Organizations should implement network-based protections such as web application firewalls and content filtering solutions to reduce exposure to malicious web content. Browser hardening measures including disabling unnecessary JavaScript features and implementing strict content security policies can provide additional defense-in-depth. Security teams should also consider implementing monitoring solutions that can detect anomalous memory access patterns or unusual browser behavior that might indicate exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to ensure that all systems are properly patched and that no legacy installations remain vulnerable to this or similar scripting engine vulnerabilities. The vulnerability highlights the importance of maintaining up-to-date security patches and implementing comprehensive endpoint protection strategies to defend against memory corruption exploits that target browser components.