CVE-2025-30397

Scripting Engine Memory Corruption Vulnerability

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

Affected

Microsoft · Windows 10 Version 1507 · Windows 10 Version 1607 · Windows 10 Version 1809 · Windows 10 Version 21H2 · Windows 10 Version 22H2 · Windows 11 version 22H2

CVSS v3.1 MICROSOFT

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

EPSS

27.04% chance of exploitation in the next 30 days, 98th percentile

CISA KEV

added 2025-05-13

Published

2025-05-13

Updated

2026-02-26

Proof-of-concept exploits (2)

• https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-mic…
• mbanyamer/CVE-2025-30397---Windows-Server-2025-JScript-RCE-Use-After-Free-66★ · 2025-05-31

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/52315

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30397
• https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-mic…

References

• CVE Record
• NVD entry

Related

• CVE-2019-7711
• CVE-2021-41579
• CVE-2023-31059
• CVE-2025-24076
• CVE-2025-24813
• CVE-2025-33073