What’s Vulnerable › Vulnerabilities
CVE-2025-1240: WinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 10.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-02-11 · updated 2026-06-17
- Weakness: CWE-787
Description
WinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of WinZip. 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 parsing of 7Z files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24986.
Affected products
- WinZip Computing WinZip: from 18.0 before 18.0.16371; from 27.0 before 27.0.16370; from 76.0 before 76.8 — fixed in 18.0.16371, 27.0.16370, 76.8
How to fix
Upgrade to a fixed version: WinZip Computing WinZip 18.0.16371, 27.0.16370, 76.8. Check the vendor advisory for mitigations.
References
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