RCE in Group-Office Group Office
CVE-2026-25512
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.185 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Group-office Group_office
- Intermesh Groupoffice — versions < 6.8.150, < 25.0.82, < 26.0.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-25512?
- CVE-2026-25512 is a high-severity vulnerability in Group-Office Group Office, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-02-04.
- How severe is CVE-2026-25512?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-25512 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.