CVE-2025-34069 CRITICAL

CVE-2025-34069: GFI Kerio Control GFIAgent Authentication Bypass via Proxy Forwarding

Vendor Gfi Software
Product Kerio Control
Weakness CWE-306 · Missing auth
Published July 2, 2025
Last update November 19, 2025

CVSS base score

9.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

What the vulnerability does

01Description

An authentication bypass vulnerability exists in GFI Kerio Control 9.4.5 due to insecure default proxy configuration and weak access control in the GFIAgent service. The non-transparent proxy on TCP port 3128 can be used to forward unauthenticated requests to internal services such as GFIAgent, bypassing firewall restrictions and exposing internal management endpoints. This enables unauthenticated attackers to access the GFIAgent service on ports 7995 and 7996, retrieve the appliance UUID, and issue administrative requests via the proxy. Exploitation results in full administrative access to the Kerio Control appliance.

Key dates

02Disclosure timeline

July 2, 2025 CVE published
November 19, 2025 Record updated