CVE-2025-30397

Name: CVE-2025-30397
Creator: NVD / NIST
Published: 2025-05-13T17:16:02.37+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10Actively ExploitedEPSS 21.56%

Last modified Jun 17, 2026

CVE-2025-30397 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.. CISA has confirmed active exploitation in the wild. EPSS estimates a 21.56% chance of exploitation in the next 30 days.

Description

Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

21.56%

97.3th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 3, 2025.

Weakness Enumeration

CWE-843

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 10 1507	< 10.0.10240.21014	—
Microsoft	Windows 10 1607	< 10.0.14393.8066	—
Microsoft	Windows 10 1809	< 10.0.17763.7314	—
Microsoft	Windows 10 21h2	< 10.0.19044.5854	—
Microsoft	Windows 10 22h2	< 10.0.19045.5854	—
Microsoft	Windows 11 22h2	< 10.0.22621.5335	—
Microsoft	Windows 11 23h2	< 10.0.22631.5335	—
Microsoft	Windows 11 24h2	< 10.0.26100.3981	—
Microsoft	Windows Server 2008	All versions	Sp2
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Server 2016	< 10.0.14393.8066	—
Microsoft	Windows Server 2019	< 10.0.17763.7314	—
Microsoft	Windows Server 2022	< 10.0.20348.3692	—
Microsoft	Windows Server 2022 23h2	< 10.0.25398.1611	—
Microsoft	Windows Server 2025	< 10.0.26100.3981	—

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30397Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-detection-scriptExploit, Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-mitigation-scriptMitigation, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30397US Government Resource

Timeline

Published: May 13, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-30397?

Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.

How severe is CVE-2025-30397?

CVE-2025-30397 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 21.56% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2025-30397?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-30397?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST