CVE-2025-30397
HIGH severity · CVSS 7.5 · CWE-843 · actively exploited (CISA KEV)
7.5CVSS HIGH ● exploited
🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2025-05-13. US federal agencies must patch by 2025-06-03.
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)21%
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30397Advisory
- https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-mitigation-scriptAdvisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30397
- https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-detection-scriptAdvisory