# CVE-2026-15481: Trendnet TEW-635BRM IPoA WAN Connection Setup rc ipoa_test command injection

> Remote attackers can execute arbitrary commands via the IPoA WAN setup interface in Trendnet TEW-635BRM routers, which are end-of-life devices.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jul 2026
- **Updated:** 13 Jul 2026
- **Also known as:** GHSA-wq7g-mf6c-75vq

## What is CVE-2026-15481?

CVE-2026-15481 is a high-severity command injection vulnerability in Trendnet TEW-635BRM, published on 12 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security flaw has been discovered in Trendnet TEW-635BRM up to 1.00.03. This vulnerability affects the function ipoa_test of the file /sbin/rc of the component IPoA WAN Connection Setup. Performing a manipulation of the argument ipoa_ipaddr results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor explains: "We are unable to confirm if the vulnerability exists. This item has been EOL since 2011. We will make an official announcement of possible vulnerabilities, and recommend users to switch devices." This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-15481?


## How do I fix CVE-2026-15481?

No fix has been published for CVE-2026-15481 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15481 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15481 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15481 and fix it if it is affected.

What it is: CVE-2026-15481 is a high-severity command injection vulnerability in Trendnet TEW-635BRM, published on 12 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15481 exists.

Affected product: Trendnet TEW-635BRM. 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-2026-15481/ (Markdown: https://insights.sbomify.com/CVE-2026-15481/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15481
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15481
- OSV: https://osv.dev/vulnerability/CVE-2026-15481

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15481/
Summaries are generated and may contain mistakes; the official description above is the record.