Horizon Alert
Summary of the vulnerability and why it matters
Certain Microsoft ActiveX controls, specifically within MSCOMCTL.OCX, contain a flaw that allows for remote code execution. This vulnerability can be triggered through malicious websites, Office documents, or .rtf files. Exploitation could lead to attackers taking control of affected systems.
- Vulnerable Microsoft ActiveX controls
- Flaw permits arbitrary code execution
- Potential for system compromise
Attack Path
How an attacker could exploit the issue
This vulnerability allows remote attackers to execute arbitrary code. Exploitation occurs when an attacker crafts a website, Office document, or RTF file that corrupts system state. This could lead to unauthorized code execution within the context of the logged-on user.
- Exposure: Malicious website, document, or file.
- Attacker Access: User opens file or visits site.
- Trigger: Corrupts system state for code execution.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability allows remote attackers to execute arbitrary code by tricking users into visiting a malicious website or opening a specially crafted document. The exploit corrupts system state, potentially leading to full system compromise. This indicates a significant risk to organizations if affected systems are not updated.
- Attackers require low skill.
- Exploitation needs user interaction.
- Business risk is high and urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability impacts organizations that utilize specific Microsoft Office, Office Web Components, SQL Server, BizTalk Server, Commerce Server, Visual Basic, and Visual FoxPro products. Attackers can exploit this by presenting a crafted website, Office document, or RTF file that triggers system state corruption, potentially leading to arbitrary code execution. This could allow an attacker to take control of an affected system. The business risk includes unauthorized access, data compromise, and system disruption.
- Identify affected assets.
- Reduce exposure or isolate risk.
- Apply vendor fixes and validate.
- Monitor for related issues.
