Microsoft Edge Mark-Of-The-Web Removal Remote Code Execution Vulnerability

December 17th, 2025
ZDI-25-1099 ZDI-CAN-27795

CVE ID

CVE-2025-60711

CVSS Score

8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

Microsoft

Affected Products

Edge

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Edge. 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 downloaded files. By performing crafted web requests, an attacker can cause the Mark-Of-The-Web to be removed from downloaded files. An attacker can leverage this vulnerability to execute code in the context of the current user at medium integrity.

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-2025-60711

Disclosure Timeline

  • 2025-09-04 - Vulnerability reported to vendor
  • 2025-12-17 - Coordinated public release of advisory
  • 2025-12-17 - Advisory Updated

Credit

Eduardo Braun Prado

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