CVE-2025-30397 is a high-severity vulnerability affecting Microsoft Windows, specifically the Scripting Engine. This vulnerability allows access of a resource using incompatible type, commonly referred to as 'type confusion', enabling an unauthorized attacker to execute code over a network. The CVSS score of 7.5 indicates that this is a serious risk that organizations should take seriously.
Risk to organizations includes potential unauthorized access and execution of malicious code, which could lead to data breaches or compromise of sensitive information. Given the nature of this vulnerability, there is a critical need for immediate action from organizations to patch their systems.
The vulnerability has been confirmed as actively exploitable in the wild, with attacks that could leverage this flaw already observed. Organizations should prioritize patching immediately to mitigate the risk of exploitation.
This vulnerability impacts a wide range of Windows versions, including various releases of Windows 10 and Windows Server. Urgency for defenders is high, and organizations are strongly advised to implement the necessary patches as soon as possible.
Vulnerability Details
The official description of CVE-2025-30397 states that the vulnerability allows unauthorized code execution due to a type confusion issue in the Microsoft Scripting Engine. The CVSS score of 7.5 categorizes it as high severity, indicating significant potential impact. Affected systems include various versions of Windows 10 and Windows Server, with the vulnerability published on May 13, 2025.
Technical Analysis
The root cause of CVE-2025-30397 is a type confusion error within the Microsoft Scripting Engine. This vulnerability has a network attack vector, requiring no privileges for exploitation, but does require user interaction. The attack complexity is rated as high, indicating that successfully exploiting this vulnerability may require advanced knowledge or specific conditions. The consequences of successful exploitation include high impacts on confidentiality, integrity, and availability.
Risk & Impact Analysis
Organizations deploying systems affected by this vulnerability face serious risks, including potential unauthorized access and data breaches. The blast radius could be significant, impacting not only the directly affected systems but also interconnected systems within the organization's network. Given the CVSS score and the existence of active exploitation, the urgency for remediation is high.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2) and Windows 11 (versions 22H2, 23H2, 24H2), along with various Windows Server versions (2008, 2012, 2016, 2019, 2022). All versions prior to vendor patch are vulnerable.
Mitigation & Remediation
Organizations should apply the relevant patches as soon as they become available. For detailed guidance, organizations can refer to the security update guide provided by Microsoft. In the absence of a patch, organizations should implement network controls and configuration hardening to mitigate the risks associated with this vulnerability.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor for unusual scripting activities, unexpected network traffic related to the Scripting Engine, and any anomalies in application behavior that may indicate exploitation.
AppSecure Threat Intelligence Insight
CVE-2025-30397 represents a critical vulnerability that highlights the need for robust security practices within organizations. Security teams should continuously evaluate their vulnerability management programs and explore options for regular penetration testing to identify similar weaknesses. The ongoing threat landscape necessitates a proactive approach to security, particularly for widely used software like Microsoft Windows.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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