ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-27947

Group-Office is an enterprise customer relationship management and groupware tool.

Published Feb 27, 2026 · catalog updated Jun 17, 2026 · Group-Office is an enterprise

Check if you run it

No confirmed exploitation is on record for CVE-2026-27947. EPSS is 1.06%. Act only if a listed version of Group-Office is an enterprise is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Group-Office is an enterprise).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.06%
Remediation
Advisory link
Affected products
cpe intermesh/group-office

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 and then invokes with a shell wildcard ( ). Because extracted filenames are attacker-controlled, they can be interpreted as options and lead to arbitrary command execution. Versions 26.0.9, 25.0.87, and 6.8.154 fix the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe intermesh/group-officeversion unspecified

How to fix CVE-2026-27947

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-27947. EPSS is 1.06%. Act only if a listed version of Group-Office is an enterprise is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-434: Unrestricted Upload of File with Dangerous Type; CWE-88. EPSS 1.06%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 27, 2026 · NIST NVD

    Detected

    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 and then invokes with a shell wildcard ( ). Because extracted filenames are attacker-controlled, they can be int

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 and then invokes with a shell wildcard ( ). Because extracted filenames are attacker-controlled, they can be int

Sources

  • CVE.orgVulnerability recordCVE-2026-27947

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-27947

    30-day exploitation probability 1.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-27947

    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 fil

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.