CVE-2026-27947HIGH 8.8EPSS p49.2%
CVE-2026-27947CVE-2026-27947
Description
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.
Scoring
| CVSS 3.1 | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 0.73% probability of exploitation · percentile 49.2% · 2026-06-18T12:00:27Z |
| Published | 2026-02-27 |
| Last modified | 2026-03-04 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Unrestricted Upload of File with Dangerous Typecwe-434 | 0% | live |
| Weakness | Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')cwe-88 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.