CVE-2018-0775 in Edge
Summary
by MITRE
Microsoft Edge in Windows 10 1709 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-2018-0758, CVE-2018-0762, CVE-2018-0768, CVE-2018-0769, CVE-2018-0770, CVE-2018-0772, CVE-2018-0773, CVE-2018-0774, CVE-2018-0776, CVE-2018-0777, CVE-2018-0778, and CVE-2018-0781.
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Analysis
by VulDB Data Team • 09/05/2025
This vulnerability resides within Microsoft Edge's scripting engine, specifically affecting Windows 10 version 1709. The flaw represents 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 stems from improper handling of memory objects during script execution, which can be manipulated by attackers to overwrite critical memory locations and ultimately execute arbitrary code with the privileges of the current user. This type of vulnerability falls under the CWE-125 weakness category, which describes out-of-bounds read conditions where memory access occurs beyond the boundaries of allocated memory regions, often leading to memory corruption and potential code execution.
The operational impact of this vulnerability is significant as it provides attackers with a path to execute malicious code remotely without requiring elevated privileges. Attackers can craft malicious web pages or documents that, when opened in Microsoft Edge, trigger the memory corruption flaw. The exploit typically involves manipulating JavaScript objects in a way that causes the scripting engine to improperly handle memory allocation and deallocation, leading to a controlled overwrite of memory contents. This vulnerability aligns with ATT&CK technique T1059.007, which covers script-based execution through JavaScript, and T1203, which involves exploitation of software vulnerabilities. The attack surface is particularly broad since Microsoft Edge is the default browser for Windows 10, making it accessible to millions of users and providing attackers with numerous potential entry points through web-based attacks.
Mitigation strategies for this vulnerability should include immediate deployment of Microsoft's security patches and updates, which address the specific memory handling issues within the scripting engine. Organizations should implement browser hardening measures such as disabling unnecessary scripting features, using restricted browsing environments, and deploying web application firewalls to filter malicious content. Security teams should also consider implementing network-based intrusion detection systems to monitor for exploitation attempts and establish robust patch management processes to ensure timely deployment of security updates. The vulnerability demonstrates the critical importance of memory safety in modern scripting engines and highlights the need for comprehensive security testing including fuzzing and memory corruption analysis. Additionally, user education about avoiding suspicious websites and attachments remains crucial, as social engineering often plays a significant role in successful exploitation of such vulnerabilities. This particular flaw underscores the ongoing challenges in securing complex software components like browser scripting engines where memory management errors can lead to severe security consequences.