CVE-2025-1240
CVE-2025-1240 is a high-severity vulnerability in Winzip with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 10% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-2096
- Weakness: CWE-787
- Affected product: Winzip
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-1240?
- 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.
- How severe is CVE-2025-1240?
- CVE-2025-1240 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-1240 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-1240?
- CVE-2025-1240 affects Winzip. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-1240?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-1240 have an EU (EUVD) identifier?
- Yes. CVE-2025-1240 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2096.
- When was CVE-2025-1240 published?
- CVE-2025-1240 was published on 2025-02-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:winzip:winzip:*:*:*:*:*:*:*:*
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- CVE-2006-6884 — Critical (CVSS 9.3): Buffer overflow in the WZFILEVIEW.FileViewCtrl.61 ActiveX control (aka Sky Software "FileView" ActiveX control) for…
- CVE-2006-3890 — Critical (CVSS 9.3): Stack-based buffer overflow in the Sky Software FileView ActiveX control, as used in WinZip 10 before build 7245 and in…
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