CVE-2026-25134
Unknown Unknown - Not Provided
Command Injection in Group-Office MaintenanceController Enables RCE

Publication date: 2026-02-02

Last updated on: 2026-02-18

Assigner: GitHub, Inc.

Description
Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, and 26.0.5, the MaintenanceController exposes an action zipLanguage which takes a lang parameter and passes it directly to a system zip command via exec(). This can be combined with uploading a crafted zip file to achieve remote code execution. This vulnerability is fixed in 6.8.150, 25.0.82, and 26.0.5.
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Meta Information
Published
2026-02-02
Last Modified
2026-02-18
Generated
2026-06-16
AI Q&A
2026-02-03
EPSS Evaluated
2026-06-15
NVD
CVE-2026-25134
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
group-office group_office to 6.8.150 (exc)
group-office group_office From 25.0.1 (inc) to 25.0.82 (exc)
group-office group_office From 26.0.1 (inc) to 26.0.5 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-88 The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.
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Executive Summary

The vulnerability exists in Group-Office's MaintenanceController where the zipLanguage action takes a lang parameter and passes it directly to a system zip command via exec(). An attacker can exploit this by uploading a specially crafted zip file combined with this parameter to execute arbitrary code remotely on the server. This allows the attacker to run commands on the system without authorization.

Impact Analysis

This vulnerability can lead to remote code execution on the affected system, allowing an attacker to gain unauthorized control over the server running Group-Office. This can result in data theft, data loss, service disruption, or further compromise of the network and systems.

Mitigation Strategies

Update Group-Office to version 6.8.150, 25.0.82, or 26.0.5 or later, as these versions contain the fix for the vulnerability in the MaintenanceController's zipLanguage action that allows remote code execution.

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