CVE-2025-34069: gfi software kerio control

Vulnerability summary

CVE-2025-34069 is a critical (CVSS 9.8) vulnerability in gfi software kerio control. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 02-07-2025
   PublishedVulnerability first disclosed.
2. 19-11-2025
   Last modifiedVulnerability information updated.

Description

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.

• CWE-306Missing Authentication for Critical FunctionThe product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.