Risk Letters

Exploited vulnerability

CVE-2018-25438

TLP:CLEAR

intermesh group-office Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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.

Facts

  • Vendor: Intermesh
  • Product: Group-Office
  • EPSS (probability of exploitation within 30 days): 0.5 %
  • First known exploitation: 22 October 2026
  • First seen by Risk Letters: 22 October 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD