CVE-2026-27947
8.8 · HIGHOverview
CVE-2026-27947 is a high-severity vulnerability affecting intermesh group-office. It was published on February 27, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from intermesh. Update group-office to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| intermesh | group-office | >= 0, < 6.8.154 | Affected |
Frequently Asked Questions
What is CVE-2026-27947?
CVE-2026-27947 is a high-severity vulnerability affecting intermesh group-office. It was published on February 27, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-27947?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-27947?
Check the references section for vendor advisories and patches from intermesh. Update group-office to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-27947?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-27947 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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