CVE-2018-0758 in Edge
Summary
by MITRE
Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0762, CVE-2018-0768, CVE-2018-0769, CVE-2018-0770, CVE-2018-0772, CVE-2018-0773, CVE-2018-0774, CVE-2018-0775, CVE-2018-0776, CVE-2018-0777, CVE-2018-0778, and CVE-2018-0781.
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Analysis
by VulDB Data Team • 09/08/2025
This vulnerability resides within the scripting engine of Microsoft Edge browser, specifically affecting Windows 10 versions 1511, 1607, 1703, and 1709 along with Windows Server 2016. The flaw manifests as a memory corruption issue that occurs when the scripting engine processes objects in memory, creating an exploitable condition that allows remote code execution. The vulnerability is categorized under CWE-125 as an out-of-bounds read condition, where the scripting engine fails to properly validate memory boundaries during object handling operations. This memory corruption vulnerability represents a critical security gap that enables attackers to execute malicious code with the privileges of the current user, bypassing typical security boundaries that protect system integrity.
The technical exploitation of this vulnerability occurs through carefully crafted web content that triggers the memory corruption in the scripting engine's object handling mechanisms. When Microsoft Edge processes malicious JavaScript or Active Scripting content, the engine's memory management routines fail to properly validate object references, leading to memory corruption that can be leveraged to execute arbitrary code. This vulnerability operates at the intersection of browser security and memory safety, where improper memory handling creates a pathway for attackers to gain unauthorized execution privileges. The attack vector typically involves phishing emails, malicious websites, or compromised web applications that deliver the exploit payload directly to the victim's browser environment.
The operational impact of this vulnerability extends beyond simple privilege escalation, as successful exploitation can lead to complete system compromise and data exfiltration. Attackers can leverage this vulnerability to install malware, establish persistence mechanisms, or conduct further reconnaissance activities within the compromised environment. The vulnerability affects all supported Windows 10 versions and Windows Server 2016, making it particularly dangerous as it spans multiple operating system releases. Security researchers have noted that this vulnerability can be chained with other exploits to create more sophisticated attack scenarios, potentially leading to privilege escalation to system-level access. The vulnerability's presence in the scripting engine makes it particularly challenging to defend against, as it operates within the trusted execution environment of the browser itself.
Mitigation strategies for this vulnerability require immediate patch deployment through Microsoft's regular security updates, as the primary fix involves correcting the memory handling routines within the scripting engine. Organizations should implement network-based protections such as web application firewalls and content filtering systems to block malicious content before it reaches user browsers. Browser hardening measures including disabling unnecessary scripting capabilities, implementing strict content security policies, and utilizing sandboxing technologies can reduce the attack surface. Security teams should monitor for indicators of compromise related to this vulnerability and implement comprehensive endpoint detection and response capabilities to identify potential exploitation attempts. The ATT&CK framework categorizes this vulnerability under T1059 for command and scripting interpreter and T1068 for exploit for privilege escalation, making it a critical target for defensive security operations. Organizations must also consider implementing multi-factor authentication and least privilege access controls to limit potential damage from successful exploitation attempts.