CVE-2018-8467 in Edge
Summary
by MITRE
A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8367, CVE-2018-8465, CVE-2018-8466.
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Analysis
by VulDB Data Team • 09/11/2025
The vulnerability described in CVE-2018-8467 represents a critical memory corruption flaw within Microsoft Edge's Chakra scripting engine, which serves as the JavaScript engine powering the browser's execution environment. This particular vulnerability manifests when the Chakra engine processes objects in memory, creating conditions that allow malicious actors to manipulate memory layouts and execute arbitrary code remotely. The flaw specifically impacts Microsoft Edge browsers and the standalone ChakraCore engine, making it a significant concern for organizations relying on these technologies for web-based applications and scripting operations.
The technical nature of this vulnerability falls under the category of memory corruption, which is classified as CWE-125 in the Common Weakness Enumeration system. This weakness occurs when software accesses memory locations outside of the intended boundaries, potentially leading to unpredictable behavior and exploitation opportunities. The Chakra engine's handling of object memory management creates pathways where attacker-controlled data can influence the engine's internal operations, ultimately allowing for remote code execution without requiring user interaction. This type of vulnerability is particularly dangerous because it can be exploited through web-based attacks, making it accessible to threat actors who can simply craft malicious web pages to deliver payloads.
From an operational impact perspective, this vulnerability enables attackers to gain complete control over affected systems running Microsoft Edge or applications utilizing ChakraCore. The remote code execution capability means that malicious actors can install malware, steal sensitive data, establish persistence mechanisms, or use the compromised systems as launch points for further attacks within a network. The vulnerability's exploitation does not require user interaction, making it particularly concerning for enterprise environments where Edge is commonly used for internal applications. Organizations may face significant security breaches and compliance violations if systems running vulnerable versions are not promptly patched, as the attack surface extends to any web-based interface that utilizes the affected JavaScript engine.
Mitigation strategies for CVE-2018-8467 should prioritize immediate patch deployment through Microsoft's regular security updates, as the vulnerability was addressed through the August 2018 security bulletin. Organizations should also implement network-level protections including web application firewalls and content filtering systems to block malicious web content. Browser hardening measures such as disabling unnecessary JavaScript features, implementing strict content security policies, and using sandboxing techniques can reduce the attack surface. Additionally, monitoring for suspicious network traffic patterns and anomalous system behavior can help detect potential exploitation attempts. The vulnerability aligns with tactics documented in the MITRE ATT&CK framework under the execution and privilege escalation domains, where attackers leverage browser-based exploits to establish footholds and move laterally within compromised environments.