CVE-2025-0411
HIGHCVSS Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Description
7-Zip Mark-of-the-Web Bypass Vulnerability. This vulnerability allows remote attackers to bypass the Mark-of-the-Web protection mechanism on affected installations of 7-Zip. 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 archived files. When extracting files from a crafted archive that bears the Mark-of-the-Web, 7-Zip does not propagate the Mark-of-the-Web to the extracted files. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current user. Was ZDI-CAN-25456.
Analysis
7-Zip contains a Mark-of-the-Web bypass vulnerability allowing attackers to circumvent Windows security warnings when extracting files from malicious archives, exploited in campaigns targeting Ukrainian organizations.
Technical Context
The CWE-693 protection bypass occurs when 7-Zip processes double-archived files (an archive within an archive). The inner archive's files lose their MotW alternate data stream during extraction, causing Windows to treat them as locally-created trusted files.
Affected Products
['7-Zip (versions before the fix)']
Remediation
Update 7-Zip to the latest version. Train users about double-archive attack techniques. Implement application whitelisting to prevent execution of unknown binaries regardless of MotW status.
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External POC / Exploit Code
Leaving vuln.today