Advisory Details

February 24th, 2025

Microsoft Edge UI Misrepresentation Remote Code Execution Vulnerability

CVE ID	CVE-2025-21404
CVSS SCORE	7.5, AV:N/AC:H/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 way Microsoft Edge displays a warning about hazardous downloads. A crafted file name can cause the warning message to be displayed incorrectly, misleading the user into believing that the file is harmless. An attacker can leverage this vulnerability to 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-2025-21404
DISCLOSURE TIMELINE	2024-09-17 - Vulnerability reported to vendor 2025-02-24 - Coordinated public release of advisory 2025-02-24 - Advisory Updated
CREDIT	Simon Zuckerbraun and Peter Girnus - Trend Micro Zero Day Initiative

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