# CVE-2026-84682: TDDPv2 setProductVer Command Injection in Archer AX90

> An unauthenticated adjacent attacker can execute arbitrary root commands on Archer AX90 routers via the TDDPv2 service, leading to full device compromise.

- **Severity:** High 7.7 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Oct 2026
- **Updated:** 23 Oct 2026
- **Also known as:** GHSA-gjhm-8mvw-7r24

## What is CVE-2026-84682?

CVE-2026-84682 is a high-severity command injection vulnerability in TP-Link Systems Inc. Archer AX90 v1, published on 1 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A command injection vulnerability exists in the TDDPv2 service (/usr/bin/tddp) on Archer AX90 V1. An unauthenticated adjacent-network attacker can exploit the setProductVer command handler to execute arbitrary operating system commands as root during device boot. 

Successful exploitation may result in complete device compromise through arbitrary command execution with root privileges.

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

## Which versions are affected by CVE-2026-84682?


## How do I fix CVE-2026-84682?

No fix has been published for CVE-2026-84682 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84682 being exploited?

There is no known exploitation of CVE-2026-84682 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84682 and fix it if it is affected.

What it is: CVE-2026-84682 is a high-severity command injection vulnerability in TP-Link Systems Inc. Archer AX90 v1, published on 1 Oct 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-2026-84682 in the wild and no public exploit code.

Affected product: TP-Link Systems Inc. Archer AX90 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-2026-84682/ (Markdown: https://insights.sbomify.com/CVE-2026-84682/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84682
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84682
- OSV: https://osv.dev/vulnerability/CVE-2026-84682

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-84682/
Summaries are generated and may contain mistakes; the official description above is the record.