WinZip 28.0 16022 7Z File Parser out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability was found in WinZip 28.0 16022. It has been declared as critical. This issue affects some unknown processing of the component 7Z File Parser. Executing a manipulation can lead to out-of-bounds write. This vulnerability is registered as CVE-2025-1240. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in WinZip 28.0 16022 and classified as critical. This vulnerability affects some unknown processing of the component 7Z File Parser. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at zerodayinitiative.com. This vulnerability was named CVE-2025-1240 since 02/11/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 28.0 16371 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector (zdi): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WinZip 28.0 16371

Timelineinfo

02/11/2025 🔍
02/12/2025 +1 days 🔍
02/12/2025 +0 days 🔍
05/06/2026 +448 days 🔍

Sourcesinfo

Advisory: ZDI-25-047
Status: Confirmed

CVE: CVE-2025-1240 (🔍)
GCVE (CVE): GCVE-0-2025-1240
GCVE (VulDB): GCVE-100-295420

Entryinfo

Created: 02/12/2025 08:28
Updated: 05/06/2026 18:52
Changes: 02/12/2025 08:28 (63), 08/18/2025 20:42 (12), 05/06/2026 18:49 (2), 05/06/2026 18:52 (6)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

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