CVE-2025-30397

Published May 13, 2025

Last updated 16 days ago

Microsoft Scripting Engine

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-30397 is a memory corruption vulnerability within the Microsoft Scripting Engine. Exploitation of this vulnerability could allow an attacker to execute arbitrary code on an affected system. To successfully exploit this vulnerability, a user must click on a specially crafted link, often delivered through a malicious website or script. The vulnerability stems from the scripting engine misinterpreting object types, leading to memory corruption. Notably, successful exploitation requires the target to be running Microsoft Edge in Internet Explorer mode. This vulnerability has been actively exploited in the wild as a zero-day.

Description: Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.
Source: secure@microsoft.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.5
Impact score: 5.9
Exploitability score: 1.6
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: Microsoft Windows Scripting Engine Type Confusion Vulnerability
Exploit added on: May 13, 2025
Exploit action due: Jun 3, 2025
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

secure@microsoft.com: CWE-843

Hype score: Not currently trending

Configurations

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References

Sources include official advisories and independent security research.