CVE-2014-4114 in Windows
Summary
by MITRE
Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allow remote attackers to execute arbitrary code via a crafted OLE object in an Office document, as exploited in the wild with a "Sandworm" attack in June through October 2014, aka "Windows OLE Remote Code Execution Vulnerability."
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 04/22/2026
This vulnerability represents a critical remote code execution flaw in Microsoft Windows operating systems that affected a broad range of platforms including Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1. The vulnerability specifically resides in the Object Linking and Embedding (OLE) component of Microsoft Office applications, which is commonly exploited through malicious Office documents containing crafted OLE objects. This flaw enables remote attackers to execute arbitrary code on targeted systems without requiring any user interaction beyond opening the malicious document, making it particularly dangerous in targeted attack scenarios.
The technical nature of this vulnerability stems from improper input validation within the OLE handling mechanisms of Microsoft Office applications. When a user opens a malicious Office document containing a specially crafted OLE object, the vulnerable code path in the application's OLE processing engine allows attackers to inject and execute arbitrary code with the privileges of the user running the Office application. This represents a classic buffer overflow condition that occurs during the parsing of OLE objects, where insufficient bounds checking permits memory corruption that can be leveraged to gain full system control. The vulnerability is categorized under CWE-121 as a stack-based buffer overflow, which aligns with the typical exploitation patterns observed in such Windows OLE vulnerabilities.
The operational impact of this vulnerability was severe and widespread, as evidenced by its exploitation in the real world through the "Sandworm" attack campaign between June and October 2014. This attack group specifically targeted government and military organizations, demonstrating the sophisticated nature of the threat landscape at the time. The vulnerability's exploitation required no user interaction beyond opening the malicious document, making it particularly effective for spearphishing campaigns and targeted attacks. Organizations that were running unpatched systems were immediately at risk of complete compromise, as the exploit could lead to full system control, data exfiltration, and persistence mechanisms being established within minutes of document opening.
The attack vector for this vulnerability aligns with the ATT&CK framework's T1203 technique for "Exploitation for Client Execution" and T1059.001 for "Command and Scripting Interpreter" as attackers could leverage the vulnerability to execute arbitrary commands on compromised systems. The exploitation process typically involved crafting Office documents with embedded OLE objects that would trigger the buffer overflow when processed by vulnerable Office applications. This vulnerability was particularly concerning because it affected multiple versions of Windows and Office, meaning that organizations needed to patch all affected systems simultaneously to achieve proper protection. The widespread impact and the sophisticated nature of the Sandworm attacks highlighted the importance of maintaining up-to-date security patches and implementing layered defensive measures.
Organizations could mitigate this vulnerability through several approaches including immediate deployment of Microsoft security patches released in the July 2014 security updates, implementing application whitelisting policies to restrict execution of Office applications from untrusted sources, and deploying email filtering solutions to block malicious Office documents. The vulnerability also underscored the importance of network segmentation and user education to reduce the attack surface. Microsoft's security response demonstrated the critical nature of timely patch management, as this vulnerability had been actively exploited in the wild before the release of patches. The incident highlighted the need for organizations to maintain robust security operations centers with rapid incident response capabilities and continuous monitoring for similar vulnerabilities in other Microsoft components.