CVE-2025-21288 is identified as a Windows COM Server Information Disclosure Vulnerability. It has been assigned a CVSS score of 6.5, categorizing it as medium severity. The nature of this vulnerability allows unauthorized access to sensitive information, which poses a significant risk to organizations relying on affected Microsoft Windows versions.
The vulnerability's exploitation could lead to severe confidentiality impacts, making it crucial for organizations to address it promptly. The potential for exploitation is heightened in local environments where affected systems are deployed.
Organizations should prioritize patching immediately. With the vulnerability being present in various versions of both client and server operating systems, the blast radius could impact a wide range of users and services.
As of the latest update, there are no known public exploits or proof-of-concept code available for this vulnerability. However, the potential for future exploit development necessitates immediate attention from security teams.
Vulnerability Details
The official description states that this vulnerability allows unauthorized access to sensitive data through the Windows COM Server component. The vulnerability is classified under CWE-908, which indicates a design flaw leading to information disclosure.
The CVSS 3.1 vector string for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N, indicating a local attack vector with low attack complexity and low privileges required. The confidentiality impact is rated as high, while integrity and availability impacts are none.
This vulnerability affects several versions of Microsoft Windows, including Windows 10, Windows 11, and various Windows Server editions. The full list of affected components includes:
Affected Products | Version Details |
|---|---|
Windows 10 | 1507, 1607, 1809, 21H2, 22H2 |
Windows 11 | 22H2, 23H2, 24H2 |
Windows Server | 2008, 2012, 2016, 2019, 2022, 2025 |
Technical Analysis
The root cause of CVE-2025-21288 lies within the Windows COM Server's improper handling of sensitive information, leading to potential leakage when exploited. The attack vector for this vulnerability is local, which means that an attacker must have access to the affected machine to exploit it.
The attack complexity is classified as low, indicating that the methods to exploit this vulnerability are straightforward and do not require significant technical expertise. Additionally, the requirement for low privileges means that a user with basic access rights could potentially exploit the vulnerability without the need for heightened permissions.
User interaction is not required for exploitation, which heightens the risk as attackers can leverage this vulnerability without needing to trick the user into taking action. The high confidentiality impact means that sensitive data could be exposed to unauthorized parties.
No integrity or availability impacts mean that the vulnerability primarily affects data confidentiality. Organizations should ensure that they monitor access to sensitive information and enforce strict access controls.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access to sensitive information. If exploited, this vulnerability could lead to data breaches, resulting in significant reputational and financial damage. The impact could extend beyond immediate losses, affecting customer trust and regulatory compliance.
The potential blast radius is extensive, given the number of affected Microsoft Windows versions. Organizations that operate in environments with multiple Windows installations should be particularly vigilant. The urgency is classified as medium; organizations should address this vulnerability in priority patch cycles.
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:
All versions prior to the vendor patch: Windows 10 (1507, 1607, 1809, 21H2, 22H2), Windows 11 (22H2, 23H2, 24H2), and various Windows Server editions (2008, 2012, 2016, 2019, 2022, 2025).
Mitigation & Remediation
Organizations should prioritize applying the relevant patches provided by Microsoft. Ensure that systems are updated to the latest versions that address this vulnerability. If patches are not immediately available, consider implementing configuration hardening measures to restrict access to sensitive information.
For detailed information on the patch and remediation actions, refer to the Microsoft Security Update Guide.
penetration testing can also help identify any misconfigurations or vulnerabilities that may arise due to this issue.
Detection Guidance
Monitor logs for any unusual access patterns that may indicate attempts to exploit this vulnerability. Organizations should look for behavioral anomalies around sensitive data access and ensure that proper logging is enabled for all system interactions.
Implement network controls to restrict access to sensitive systems and maintain an active monitoring program to detect any anomalies that could indicate exploitation attempts.
AppSecure Threat Intelligence Insight
CVE-2025-21288 represents a significant risk due to the potential for information disclosure in a widely used operating system. This vulnerability highlights the importance of maintaining up-to-date systems and the need for robust security practices.
The low likelihood of current exploitation does not negate the importance of addressing this vulnerability. Organizations must be proactive in their security posture to prevent future incidents.
For further insights on maintaining security and vulnerability management, consider reviewing our guide on vulnerability management programs. Understanding how to address vulnerabilities effectively is crucial for protecting your organization.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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