by Kastro
Paper/Archive/CVE-2026-25512

CVE-2026-25512

Intermesh groupoffice — Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler

EPSS 20%public exploitCVSS 9.4
critical.is priorityof 100
58
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 97.4.974 × 2019.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
groupoffice< 6.8.150–CNA
groupoffice< 25.0.82–CNA
groupoffice< 26.0.5–CNA

Scores by source

GitHub_M (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/Intermesh/groupoffice/security/advisories/GHSA-579w-jvg7-frr4refgithub.com/Intermesh/groupoffice/commit/6c612deca97a6cd2a1bd4feea0ce7e8e9d907792