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CVE-2025-9491

7.8 · HIGH

Microsoft Windows LNK File UI Misrepresentation Remote Code Execution Vulnerability.

Published Aug 26, 2025CWE-451EPSS 73.03%

Overview

CVE-2025-9491 is a high-severity vulnerability. It was published on August 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Microsoft Windows LNK File UI Misrepresentation Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of .LNK files. Crafted data in an .LNK file can cause hazardous content in the file to be invisible to a user who inspects the file via the Windows-provided user interface. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-25373.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.zerodayinitiative.com/advisories/ZDI-25-148/Refmsrc.microsoft.com/update-guide/advisory/ADV25258226Refwww.virustotal.com/gui/file/a55789d49c395a9b16cb56b0544266d9ecee409fa3c5fead8082f28c2aff4e76

How CyberStrike helps

Frequently asked questions

What is CVE-2025-9491?

CVE-2025-9491 is a high-severity vulnerability. It was published on August 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-9491?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-9491?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-9491?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-9491 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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