CVE-2017-8496 in Edge
Summary
by MITRE
Microsoft Edge in Windows 10 1607 and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8497.
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Analysis
by VulDB Data Team • 12/13/2025
The vulnerability identified as CVE-2017-8496 represents a critical memory corruption flaw in Microsoft Edge browser that affects Windows 10 version 1607 and Windows Server 2016 operating systems. This vulnerability stems from improper handling of objects in memory during Microsoft Edge's execution, creating a pathway for attackers to execute arbitrary code with the privileges of the currently logged-in user. The flaw specifically manifests when the browser fails to properly validate or manage memory objects, leading to potential code execution in the context of the current user session rather than the more restricted browser sandbox environment.
This memory corruption vulnerability operates through a classic use-after-free or buffer overflow mechanism where Microsoft Edge processes objects in memory without adequate bounds checking or validation procedures. The flaw allows an attacker to manipulate memory contents through crafted web content that, when rendered by the browser, triggers the corrupted memory handling behavior. The vulnerability is particularly concerning because it enables remote code execution without requiring user interaction beyond visiting a malicious website, making it a prime target for drive-by attack scenarios.
The operational impact of CVE-2017-8496 extends beyond simple code execution as it fundamentally undermines the security boundaries that separate browser processes from the underlying operating system. When successfully exploited, the vulnerability allows attackers to escalate privileges to the user context, potentially enabling them to access sensitive data, install malware, modify system configurations, or establish persistent access through the compromised browser session. This represents a significant elevation from typical browser-based attacks that are usually limited to the browser sandbox environment.
From a cybersecurity perspective, this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions, both of which are common memory corruption patterns. The attack vector maps to techniques described in the MITRE ATT&CK framework under T1059 for command and scripting interpreter and T1068 for exploit for privilege escalation. The vulnerability's exploitation requires minimal user interaction, making it particularly dangerous in enterprise environments where users may inadvertently visit malicious websites or receive phishing emails containing compromised content.
Mitigation strategies for CVE-2017-8496 should prioritize immediate patch deployment through Microsoft's security updates, as the vulnerability was addressed through the July 2017 security updates for Windows 10 and Windows Server 2016. Organizations should also implement network-based protections including web filtering solutions that can block access to known malicious domains and content. Browser hardening measures such as enabling enhanced security features, disabling unnecessary browser components, and maintaining strict content security policies can help reduce the attack surface. Additionally, user education programs should emphasize the importance of avoiding untrusted websites and suspicious email attachments, while network monitoring solutions should be configured to detect anomalous behavior patterns that might indicate exploitation attempts.