Remote Code Execution Vulnerability in Group-Office by Intermesh
CVE-2026-25512

9.4CRITICAL

Key Information:

Vendor

Intermesh

Status
Groupoffice
Vendor
CVE Published:
4 February 2026

What is CVE-2026-25512?

Group-Office, a popular enterprise customer relationship management and groupware tool, is affected by a vulnerability that allows for remote code execution. This security flaw arises from improper handling of user input within the endpoint responsible for processing email attachments. Specifically, the vulnerability occurs when the user-controlled parameter, tmp_file, is directly concatenated into an exec() call. An authenticated attacker can exploit this by injecting shell metacharacters, enabling them to execute arbitrary commands on the server. This critical issue has been addressed in later versions, specifically 6.8.150, 25.0.82, and 26.0.5, which include the necessary patches to mitigate this risk.

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Affected Version(s)

groupoffice < 6.8.150 < 6.8.150

groupoffice < 25.0.82 < 25.0.82

groupoffice < 26.0.5 < 26.0.5

References

https://github.com/Intermesh/groupoffice/security/advisor...
x_refsource_CONFIRM
http://github.com/Intermesh/groupoffice/commit/6c612deca9...
x_refsource_MISC

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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