Unauthenticated File Upload Vulnerability in Feng Office by Feng Office
CVE-2026-36669

9.8CRITICAL

Key Information:

Vendor

Feng Office

Status
Feng Office
Vendor
CVE Published:
17 July 2026

What is CVE-2026-36669?

Feng Office version 3.11.13.11 is vulnerable to an unauthenticated arbitrary file upload through the ck_upload_handler.php script. This vulnerability allows remote attackers to upload malicious files, such as HTML scripts, to the publicly accessible /tmp/ directory. Successful exploitation of this vulnerability can lead to unauthorized commands being executed on the server, potentially compromising the entire website and exposing sensitive data.

References

https://www.fengoffice.com/
https://github.com/firstlax6t/CVE-2026-36669-FengOffice

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.