CVE-2026-27947
Group-Office Vulnerable to Remote Code Execution (RCE)
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Group-Office is an enterprise customer relationship management and groupware tool. Versions prior to 26.0.9, 25.0.87, and 6.8.154 have an authenticated Remote Code Execution vulnerability in the TNEF attachment processing flow. The vulnerable path extracts attacker-controlled files from `winmail.dat` and then invokes `zip` with a shell wildcard (`*`). Because extracted filenames are attacker-controlled, they can be interpreted as `zip` options and lead to arbitrary command execution. Versions 26.0.9, 25.0.87, and 6.8.154 fix the issue.
| CWE | CWE-88 CWE-434 |
| Vendor | intermesh |
| Product | groupoffice |
| Published | Feb 27, 2026 |
| Last Updated | Mar 3, 2026 |
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Affected Versions
Intermesh / groupoffice
>= 26.0.0, < 26.0.9 >= 25.0.0, < 25.0.87 < 6.8.154