CVE-2026-25512

CRITICAL EPSS 96.9%
Published Feb 4, 20264mo ago · Modified Jun 17, 20261w ago
9.4 CVSS 4.0
Critical
Find Similar
Published Feb 4, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled parameter tmp_file into an exec() call. By injecting shell metacharacters into tmp_file, an authenticated attacker can execute arbitrary system commands on the server. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.

CVSS Details

Base Score
9.4
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
96.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-78 OS Command Injection Injection

Affected Products 3

VendorProductVersionRange
group-officegroup_office* <6.8.150
group-officegroup_office*≥25.0.1  –  <25.0.82
group-officegroup_office*≥26.0.1  –  <26.0.5

References 2

  • github.com http://github.com/Intermesh/groupoffice/commit/6c612deca97a6cd2a1bd4feea0ce7e8e9d907792
    Patch
  • github.com https://github.com/Intermesh/groupoffice/security/advisories/GHSA-579w-jvg7-frr4
    ExploitVendor Advisory

Remediation

  • github.com http://github.com/Intermesh/groupoffice/commit/6c612deca97a6cd2a1bd4feea0ce7e8e9d907792
    Patch