Advisory Details

March 18th, 2025

Microsoft Windows MSC File Insufficient UI Warning Remote Code Execution Vulnerability

ZDI-25-150
ZDI-CAN-26371

CVE ID CVE-2025-26633
CVSS SCORE 7.0, AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

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 MSC files. The product does not warn the user before loading an unexpected MSC file. An attacker can leverage this vulnerability to evade file reputation protections and execute code in the context of the current user.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26633
DISCLOSURE TIMELINE
  • 2025-01-30 - Vulnerability reported to vendor
  • 2025-03-18 - Coordinated public release of advisory
  • 2025-03-18 - Advisory Updated
CREDIT Aliakbar Zahravi
BACK TO ADVISORIES