This critical memory corruption vulnerability in Microsoft Internet Explorer is confirmed to be actively exploited in the wild and enables remote code execution.

This is a use-after-free vulnerability involving memory corruption in the HTML object handling process. An unauthenticated attacker can exploit this by directing a user to a malicious website, resulting in the execution of arbitrary code.

With a CVSS score of 9.5, the risk of remote code execution is extreme. Exploitation of this flaw allows attackers to bypass security boundaries, potentially leading to full system takeover, data exfiltration, or the deployment of ransomware. The historical use of this vulnerability in sophisticated campaigns like "Operation Aurora" underscores its effectiveness as an initial access vector.

Immediate Action: Apply the patch associated with MS10-002. Organizations should phase out the use of Internet Explorer entirely in favor of modern, secure browsers.

Proactive Monitoring: Scan for unauthorized execution of child processes spawned by the browser process and monitor for anomalous outbound network connections.

Compensating Controls: Deploy endpoint protection tools configured to block known browser-based exploits and restrict browser access to untrusted external sites via strict proxy policies.

Public Exploit Available: Yes — weaponized modules exist in both Metasploit and ExploitDB.

Given the severity of this vulnerability and its history of use in advanced persistent threat campaigns, immediate remediation is mandatory for any remaining legacy systems. Users must transition to supported browsers that receive regular security updates and feature modern memory protection mechanisms.