Is CVE-2026-27947 actively exploited?

No active exploitation of CVE-2026-27947 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27947 be exploited remotely?

Yes. CVE-2026-27947 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27947?

CVE-2026-27947 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2026-27947

HIGH

CVE-2026-27947

CWE-88Published: February 27, 2026· Updated: Mar 4, 2026

8.8

CVSS v3.1

EPSS:0.30%probability of exploitation in 30 daysPercentile:52.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-27947 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.