CVE-2018-25438 Details
Description
Intermesh Group-Office 3.3.0 before 3.5.5 contains an unauthenticated path traversal vulnerability in compress.php that allows remote attackers to read arbitrary files by manipulating the 'file' parameter. Attackers can send GET requests to /compress.php with '../' sequences in the 'file' parameter, which is appended to the cache path and passed to readfile(), to read files such as /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-21.
A path traversal vulnerability has been identified in Intermesh Group-Office versions 3.3.0 prior to 3.5.5. The vulnerability resides in the compress.php file, where the 'file' parameter can be manipulated to read arbitrary files on the server. This is achieved by sending GET requests with '../' sequences in the 'file' parameter, which is then appended to the cache path and passed to the readfile() function. Exploitation of this vulnerability could allow access to sensitive files, such as the /etc/passwd file on Unix-based systems.
Users are advised to update Group-Office to version 3.5.5 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 22, 2026CISA-ADP
Assessed Oct 28, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cxsecurity.com/issue/WLB-2018020249 | [email protected] | ExploitTechnical Description |
| https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/groupoffice-lfi.yaml | [email protected] | ExploitTechnical Description |
| https://www.group-office.com/ | [email protected] | ProductVendor |
| https://www.vulncheck.com/advisories/intermesh-group-office-3.5.5-path-traversal-via-compress-php | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Intermesh Group-Office | >= 3.3.0, < 3.5.5 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 28, 2026 | CVE Modified | CISA-ADP |
| Oct 22, 2026 | New CVE Received | [email protected] |