# CVE-2025-7851: Unauthorized root access via debug functionality

> Attackers can gain root shell access on TP-Link Omada gateways via debug functionality, requiring specific restricted conditions.

- **Severity:** High 8.7 (`CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Oct 2025
- **Updated:** 24 Oct 2025
- **Also known as:** GHSA-q2rh-fc48-r3gw

## What is CVE-2025-7851?

CVE-2025-7851 is a high-severity vulnerability in TP-Link Systems Inc. Festa gateways, published on 21 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An attacker may obtain the root shell on the underlying OS system with the restricted conditions on Omada gateways.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2025-7851?

It affects 13 products.


Products: Tp-Link Er605 Firmware, Tp-Link Er706w-4g Firmware, Tp-Link Er706w Firmware, Tp-Link Er707-M2 Firmware, Tp-Link Er7206 Firmware, Tp-Link Er7212pc Firmware, Tp-Link Er7412-M2 Firmware, Tp-Link Er8411 Firmware, Tp-Link Fr205 Firmware, Tp-Link Fr307-M2 Firmware, Tp-Link Fr365 Firmware, Tp-Link G36 Firmware, Tp-Link G611 Firmware.

## How do I fix CVE-2025-7851?

No fix has been published for CVE-2025-7851 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-7851 being exploited?

There is no known exploitation of CVE-2025-7851 in the wild and no public exploit code.

## Other vulnerabilities in TP-Link Systems Inc. Festa gateways

- [CVE-2025-6542](https://insights.sbomify.com/CVE-2025-6542/): OS command injection in multiple parameters (critical 9.3)
- [CVE-2025-7850](https://insights.sbomify.com/CVE-2025-7850/): Authenticated OS command execution (critical 9.3)
- [CVE-2025-6541](https://insights.sbomify.com/CVE-2025-6541/): OS command injection using information obtained from the web management interface (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-7851 and fix it if it is affected.

What it is: CVE-2025-7851 is a high-severity vulnerability in TP-Link Systems Inc. Festa gateways, published on 21 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-7851 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. Festa gateways. 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-2025-7851/ (Markdown: https://insights.sbomify.com/CVE-2025-7851/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-7851
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-7851
- OSV: https://osv.dev/vulnerability/CVE-2025-7851

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-7851/
Summaries are generated and may contain mistakes; the official description above is the record.