# CVE-2025-30397: Microsoft Windows Scripting Engine Type Confusion Vulnerability

Source: https://junglewise.ai/threats/cve-2025-30397-microsoft-windows-scripting-engine-type-confusion-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-05-13. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2025-30397 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2025-05-13

A type confusion vulnerability in the Microsoft Windows Scripting Engine allows an unauthorized attacker to execute arbitrary code over a network. Exploitation typically requires a user to visit a specially crafted URL, leading to the access of resources using incompatible types.

Technologies: [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2025-30397 exploited in the wild?** Yes. CVE-2025-30397 is known to be exploited in the wild, first recorded on 13 May 2025. Treat it as urgent.

**How severe is CVE-2025-30397?** Critical severity, with a CVSS score of 7.5, published 13 May 2025.

**Which products and versions are affected?** Microsoft Windows Scripting Engine; Microsoft Windows 10 up to (excluding) 10.0.14393.8066, 10.0.17763.7314, 10.0.19044.5854, 10.0.19045.5854, 10.0.10240.21014; Microsoft Windows 11 up to (excluding) 10.0.22621.5335, 10.0.22631.5335, 10.0.26100.4061; Microsoft Windows Server 2008 / 2012 / 2016 / 2019 / 2022 / 2025.

**Is there a fix for CVE-2025-30397?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-30397 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2025-30397?** Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Windows Scripting Engine
- Microsoft Windows 10 up to (excluding) 10.0.14393.8066, 10.0.17763.7314, 10.0.19044.5854, 10.0.19045.5854, 10.0.10240.21014
- Microsoft Windows 11 up to (excluding) 10.0.22621.5335, 10.0.22631.5335, 10.0.26100.4061
- Microsoft Windows Server 2008 / 2012 / 2016 / 2019 / 2022 / 2025

## Timeline

- 2025-05-13: disclosed
- 2025-05-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2025-05-13: exploited: Reported as exploited in the wild at time of publication.

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