CVE-2026-25512: critical vulnerability in Intermesh groupoffice
Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler
Published · Updated
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48Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 9.4epss 20%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
Intermesh · groupofficeRelated CVEs — Intermesh groupoffice
In the same product, most dangerous first.
CVE-2026-34838CRITICALGroup-Office: Authenticated Remote Code Execution via PHP Insecure Deserialization in `AbstractSettingsCollection`EPSS 1.0%CVE-2026-25134CRITICALGroup-Office Argument Injection in MaintenanceController::actionZipLanguageEPSS 0.9%CVE-2026-27947CRITICALGroup-Office Vulnerable to Remote Code Execution (RCE)EPSS 0.8%CVE-2023-46730HIGHServer-Side Request Forgery in groupoffice EPSS 0.7%CVE-2026-25511HIGHGroup-Office is vulnerable to SSRF and File Read in WOPI service discoveryEPSS 0.4%CVE-2024-22418MEDIUMStored Cross-site Scripting Vulnerability via Malicious File Names in GroupOfficeEPSS 0.4%