CVE-2025-21287 is a high-severity vulnerability that affects Microsoft Windows Installer. This vulnerability allows attackers to escalate privileges on affected systems, potentially leading to unauthorized access and manipulation of sensitive data. With a CVSS score of 7.8, this vulnerability represents a significant risk to organizations running the affected versions of Windows.
The vulnerability was published on January 14, 2025, and remains unpatched in many environments. Organizations should prioritize patching immediately to protect themselves from potential exploits that could arise from this vulnerability.
Risks associated with CVE-2025-21287 include the potential for local attackers to execute arbitrary code with elevated privileges. This could result in a significant impact on confidentiality, integrity, and availability of systems, making it crucial for organizations to assess their exposure.
Currently, there is no known public exploit for this vulnerability. However, the risk remains, as attackers may develop methods to exploit this weakness. Organizations should remain vigilant and monitor for any developments related to this CVE.
Vulnerability Details
The vulnerability is classified as an elevation of privilege issue, specifically related to Microsoft Windows Installer. It has a CVSS score of 7.8, indicating a high level of severity due to the potential impacts on affected systems.
Affected products include several versions of Windows 10 and Windows Server, specifically versions prior to their respective patches. The vulnerability is categorized under CWE-269, which pertains to improper privilege management.
Technical Analysis
The root cause of this vulnerability lies in the Windows Installer's improper handling of privileges. Attackers with local access can exploit this weakness to gain elevated privileges without requiring user interaction, indicating a low attack complexity.
The attack vector is local, meaning that an attacker must have direct access to the system to exploit this vulnerability. The attack complexity is low, requiring minimal skill to execute the exploit, while the impact on confidentiality, integrity, and availability is rated as high.
Risk & Impact Analysis
Risk to organizations includes unauthorized access and potential manipulation of sensitive data. The blast radius for this vulnerability extends to all affected installations of Windows 10 and Windows Server, which could lead to widespread exploitation if left unaddressed.
Given the high CVSS score, organizations should address this vulnerability in their priority patch cycle to mitigate risks associated with the exploitation of this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of Microsoft Windows are affected by this vulnerability: Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2), Windows 11 (versions 22H2, 23H2, 24H2), and various Windows Server versions (2008, 2012, 2016, 2019, 2022, and 2025). Organizations should ensure they are running patched versions to mitigate the risk.
Mitigation & Remediation
Organizations should prioritize patching their systems to the latest versions to mitigate this vulnerability. If immediate patching is not possible, consider implementing temporary workarounds, such as restricting local access to systems or applying configuration hardening measures. Regular monitoring for unusual behavior can also help detect potential exploitation attempts.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual access patterns, track behavioral anomalies, and look for changes in system configurations that could indicate an attack.
AppSecure Threat Intelligence Insight
This vulnerability highlights the ongoing need for organizations to maintain an effective vulnerability management program. Regularly updating systems and applying security patches is essential to minimize risks. For further insights on vulnerability management, organizations can refer to our comprehensive guide on vulnerability management programs. Additionally, understanding the implications of privilege escalation and how it can affect security posture is critical.
Organizations should also consider adopting a proactive approach by engaging in penetration testing to identify potential vulnerabilities before they can be exploited.
Finally, the vulnerability landscape continues to evolve, and security teams must stay informed about emerging threats. For more information on current trends and insights, refer to our article on vulnerability exposure trends to ensure they are not caught off guard.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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