CVE-2016-7262 is a high-severity vulnerability affecting various versions of Microsoft Excel. This vulnerability allows user-assisted remote attackers to execute arbitrary commands via a crafted cell that is mishandled upon a click, commonly referred to as the "Microsoft Office Security Feature Bypass Vulnerability." The CVSS score of 7.8 indicates a significant risk, necessitating immediate attention from organizations using affected versions.
The affected versions include Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2016, Office Compatibility Pack SP3, and Excel Viewer. Attackers may leverage this vulnerability to gain unauthorized access to sensitive data or execute malicious commands, posing a substantial threat to organizational security.
Risk to organizations includes potential data breaches and disruption of business operations. Given the exploitation potential and the ease of triggering the vulnerability through user interaction, organizations should prioritize patching immediately.
Currently, there is no public exploit confirmed for this vulnerability, but it has been listed in the Known Exploited Vulnerabilities (KEV) catalog since March 3, 2022. Organizations are urged to stay vigilant and apply updates as per vendor instructions to mitigate risks.
Vulnerability Details
The vulnerability manifests due to improper handling of input within Microsoft Excel, allowing attackers to execute arbitrary commands. The CVSS 3.1 score is 7.8, indicating high severity due to the local attack vector, low complexity, and requirement for user interaction. The confidentiality, integrity, and availability impacts are all rated as high.
The official CVE description outlines the vulnerability as a security feature bypass. It affects multiple Excel versions, including 2007 SP3, 2010 SP2, and 2016, as well as the Office Compatibility Pack and Excel Viewer. The vulnerability was published on December 20, 2016.
Technical Analysis
The root cause of CVE-2016-7262 is the mishandling of crafted cells in Excel when clicked by users. This vulnerability requires local access and user interaction, which simplifies the attack vector for remote attackers with social engineering tactics.
The attack complexity is low, as it relies on user action rather than sophisticated techniques. The required privileges are none, making it particularly dangerous for unpatched systems. The user interaction requirement adds a layer of defense, as users must be tricked into clicking the malicious cell.
If exploited, an attacker could gain high impacts on confidentiality, integrity, and availability of the system. The vulnerability primarily affects users who engage with Excel documents from untrusted sources.
Risk & Impact Analysis
Organizations face significant risks due to CVE-2016-7262. The exploitation of this vulnerability can lead to unauthorized command execution, potentially compromising sensitive data and systems. The blast radius is extensive, impacting any organization using the affected Excel versions.
Given the high CVSS score, the urgency for remediation is critical. Organizations must apply the necessary patches to prevent potential exploitation. The vulnerability has been noted in the KEV catalog, further emphasizing its real-world applicability and threat.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The vulnerability affects the following versions of Microsoft Excel and related products: Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2016, Office Compatibility Pack SP3, and Excel Viewer. Organizations should ensure that they are running patched versions to mitigate the risk.
Mitigation & Remediation
To remediate CVE-2016-7262, organizations should apply the patches provided by Microsoft as detailed in the Microsoft Security Bulletin MS16-148. Organizations must ensure they are running the latest versions of the affected software to protect against possible exploitation.
Detection Guidance
Organizations should monitor logs for any unusual activity related to the opening or manipulation of Excel files. Behavioral anomalies, such as unexpected prompts or error messages when interacting with Excel, may indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2016-7262 highlights the ongoing risks associated with software vulnerabilities, particularly in widely used applications like Microsoft Excel. Security teams should focus on penetration testing methodologies to identify weaknesses and implement robust security controls. Regular patch management and employee training on security awareness are essential strategies to fortify defenses against vulnerabilities such as this.
Security teams should also consider the insights gained from vulnerability management programs to continuously improve their security posture. As exemplified by the analysis of CVE-2016-7262, understanding the nature and impact of vulnerabilities can help organizations prioritize their remediation efforts effectively.
In conclusion, organizations must remain vigilant against vulnerabilities like CVE-2016-7262, employing both proactive and reactive measures to safeguard their systems and data.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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