High severity · published Feb 11, 2025
CVE-2025-1240
WinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
8.8
CVSS
10.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)10.3% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WI
Winzip · Winzip
18.0 before 18.0.16371; 27.0 before 27.0.16370; 76.0 before 76.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-1240
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-1240
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-25-047/
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