CVE-2021-34462 is a high-severity vulnerability that allows local attackers to escalate privileges within the Microsoft Windows AppX Deployment Extensions. This vulnerability, identified as a local privilege escalation issue, poses significant risks to organizations that utilize affected Windows versions. With a CVSS score of 7.0, organizations should prioritize addressing this vulnerability.
The vulnerability was made public on July 16, 2021, and has been classified under CWE-362. The potential for exploitation is concerning as it could lead to unauthorized access and control over the affected systems.
Organizations must act swiftly as the vulnerability has high impact scores across confidentiality, integrity, and availability. The exploitability of this vulnerability is high, increasing the urgency for organizations to implement patches and mitigations.
In light of these factors, organizations should prioritize patching immediately to mitigate the risks associated with CVE-2021-34462.
Vulnerability Details
The official description states that this vulnerability allows for elevation of privilege within the Windows AppX Deployment Extensions. The CVSS score, provided by Microsoft, is 7.0, indicating a high severity level. The vulnerability affects several versions of Windows, including Windows 10 and Windows Server 2016 and 2019.
The specific versions affected include Windows 10 (all versions), Windows Server 2016, and Windows Server 2019. The published date of the CVE is July 16, 2021, and it has been modified as of November 21, 2024.
Technical Analysis
The root cause of CVE-2021-34462 lies in improper validation of user input, allowing local users to escalate their privileges. The attack vector is local, meaning that an attacker must have access to the affected system. With high attack complexity and low privileges required, the bar for exploitation is significantly lowered.
User interaction is not required to exploit this vulnerability, making it particularly dangerous. If successfully exploited, it could lead to high confidentiality, integrity, and availability impacts, further emphasizing the need for immediate remediation.
Risk & Impact Analysis
The deployment of this vulnerability increases risks across various environments, especially for organizations with sensitive data and critical infrastructure. The potential blast radius is large, as the vulnerability affects multiple versions of Windows, including those widely used in corporate settings.
Given the high CVSS score and the current exploitability status, organizations should address this vulnerability in their priority patch cycle to mitigate the risk of exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions are affected by CVE-2021-34462: Windows 10 (all versions), Windows Server 2016, and Windows Server 2019. Organizations should ensure they are running patched versions to mitigate risks.
Mitigation & Remediation
To remediate CVE-2021-34462, organizations should prioritize applying the latest patches provided by Microsoft. For more information on available patches, refer to the patch documentation. Organizations should also consider implementing additional security measures such as network segmentation, strict access controls, and regular security audits.
Detection Guidance
Organizations should monitor logs for unusual access patterns and privilege escalation attempts. Behavioral anomalies in user activities may indicate exploitation attempts. Keeping track of system changes can also provide insights into potential exploitation.
AppSecure Threat Intelligence Insight
CVE-2021-34462 highlights the risk of privilege escalation vulnerabilities in widely used operating systems. Organizations should continuously assess their security posture to prevent similar vulnerabilities in the future. For further insights into vulnerability management, organizations can read about our vulnerability management program and best practices in penetration testing methodology to strengthen their defenses against future vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)