Is CVE-2025-1240 actively exploited?

No active exploitation of CVE-2025-1240 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-1240 be exploited remotely?

Yes. CVE-2025-1240 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-1240?

CVE-2025-1240 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2025-1240

CWE-787Published: February 11, 2025· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-1240 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.