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

> Unauthenticated attackers can bypass authentication via proxy forwarding to gain full administrative access to the Kerio Control appliance.

- **Severity:** Critical 9.5 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jul 2025
- **Updated:** 19 Nov 2025
- **Also known as:** GHSA-rf49-98vq-w8qg

## What is CVE-2025-34069?

CVE-2025-34069 is a critical authentication bypass vulnerability in GFI Software Kerio Control, published on 2 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2025-34069?

It affects 1 product.


Products: Gfi Kerio Control.

## How do I fix CVE-2025-34069?

No fix has been published for CVE-2025-34069 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34069 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34069 exists.

Public exploit code:

- Kerio Control 9.4.5 Auth Bypass PoC (github_poc): https://github.com/cppghoul/CVE-2025-34069

## Other vulnerabilities in GFI Software Kerio Control

- [CVE-2025-34070](https://insights.sbomify.com/CVE-2025-34070/): GFI Kerio Control GFIAgent Missing Authentication on Administrative Interfaces (critical 10.0)
- [CVE-2025-34071](https://insights.sbomify.com/CVE-2025-34071/): GFI Kerio Control Unsigned System Image Upload Root Code Execution (critical 9.4)
- [CVE-2024-52875](https://insights.sbomify.com/CVE-2024-52875/): Open redirect in Kerio Control (high 8.8)
- [CVE-2019-16414](https://insights.sbomify.com/CVE-2019-16414/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34069 and fix it if it is affected.

What it is: CVE-2025-34069 is a critical authentication bypass vulnerability in GFI Software Kerio Control, published on 2 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34069 exists.

Affected product: GFI Software Kerio Control. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-34069/ (Markdown: https://insights.sbomify.com/CVE-2025-34069/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34069
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34069
- OSV: https://osv.dev/vulnerability/CVE-2025-34069

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34069/
Summaries are generated and may contain mistakes; the official description above is the record.