Unauthenticated Path Traversal Vulnerability in Intermesh Group-Office by Intermesh
CVE-2018-25438

8.7HIGH

Key Information:

Vendor

Intermesh

Status
Group-office
Vendor
CVE Published:
22 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25438?

Intermesh Group-Office versions prior to 3.5.5 are susceptible to an unauthenticated path traversal vulnerability found in the compress.php file. This flaw allows remote attackers to read arbitrary files on the server by manipulating the 'file' parameter in GET requests. By using directory traversal sequences, an attacker could access sensitive files, such as /etc/passwd, posing a significant risk to system integrity and data privacy. Evidence of exploitation was recorded by the Shadowserver Foundation recently, highlighting the importance of immediate remediation for affected users.

Affected Version(s)

Group-Office 3.3.0 < 3.5.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-25438 - Proof of Concept

References

https://cxsecurity.com/issue/WLB-2018020249
exploit
https://github.com/projectdiscovery/nuclei-templates/blob...
technical-description
https://www.group-office.com/
product

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

indoushka
The Shadowserver Foundation
.