# CVE-2026-16348: Command Injection Vulnerability in VPN connection of Archer BE800

> Authenticated attackers can execute arbitrary root commands via VPN settings in TP-Link Archer BE800 routers, enabling persistent backdoors and network attacks.

- **Severity:** High 8.5 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L`)
- **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:** 24 Aug 2026
- **Updated:** 25 Aug 2026
- **Also known as:** GHSA-55gr-958w-9j4g

## What is CVE-2026-16348?

CVE-2026-16348 is a high-severity command injection vulnerability in TP-Link Systems Inc. Archer BE800 v1, published on 24 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An authenticated command injection vulnerability in TP-Link Archer BE800 V1 allows an attacker with administrative access to execute arbitrary system commands with root privileges by injecting shell metacharacters via a VPN connection. 

Successful exploitation may enable persistent backdoors, credential theft, LAN reconnaissance, and router-assisted attacks against connected devices.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-16348?


## How do I fix CVE-2026-16348?

No fix has been published for CVE-2026-16348 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-16348 being exploited?

There is no known exploitation of CVE-2026-16348 in the wild and no public exploit code.

Public exploit code:

- TP-Link Archer BE800 V1 — VPN Key Injection RCE (github_poc): https://github.com/Slagzz/CVE-2026-16348

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-16348 and fix it if it is affected.

What it is: CVE-2026-16348 is a high-severity command injection vulnerability in TP-Link Systems Inc. Archer BE800 v1, published on 24 Aug 2026. 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-2026-16348 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. Archer BE800 v1. 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-2026-16348/ (Markdown: https://insights.sbomify.com/CVE-2026-16348/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-16348
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16348
- OSV: https://osv.dev/vulnerability/CVE-2026-16348

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-16348/
Summaries are generated and may contain mistakes; the official description above is the record.