# CVE-2026-2670: Advantech WISE-6610-NB Background Management openvpn_apply os command injection

> Remote attackers can execute arbitrary OS commands via the delete_file argument in the openvpn_apply CGI script of Advantech WISE-6610 devices.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Feb 2026
- **Updated:** 7 Sep 2026
- **Also known as:** GHSA-36ph-wmrq-6hrj

## What is CVE-2026-2670?

CVE-2026-2670 is a high-severity command injection vulnerability in Advantech WISE-6610-CB, published on 18 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was identified in Advantech WISE-6610-NB, WISE-6610-EB, WISE-6610-TB, WISE-6610-JB, WISE-6610-CB, WISE-6610-EL-NB, WISE-6610-EL-EB, WISE-6610-EL-TB, WISE-6610-EL-JB, WISE-6610-EL-CB, WISE-6610P-DEA, WISE-6610P-DNA and WISE-6610P-DTA 1.2.1_20251110. Affected is an unknown function of the file /cgi-bin/luci/admin/openvpn_apply of the component Background Management. Such manipulation of the argument delete_file leads to os command injection. The attack can be executed remotely. The exploit is publicly available and might be used. Upgrading to version 1.2.4_20260821 is able to address this issue. It is advisable to upgrade the affected component. The vendor explains: "The delete operation has been redesigned to map the requested file type to a fixed allowlisted path, require a numeric tunnel ID, reject invalid requests, and use the native filesystem API (fs.unlink) instead of constructing a shell command from request data."

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-2670?


## How do I fix CVE-2026-2670?

No fix has been published for CVE-2026-2670 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2670 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2670 exists.

Public exploit code:

- https://github.com/ali-py3/exploit-CVE-2026-2670 (github_poc): https://github.com/ali-py3/exploit-CVE-2026-2670

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2670 and fix it if it is affected.

What it is: CVE-2026-2670 is a high-severity command injection vulnerability in Advantech WISE-6610-CB, published on 18 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2670 exists.

Affected product: Advantech WISE-6610-CB. 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-2026-2670/ (Markdown: https://insights.sbomify.com/CVE-2026-2670/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2670
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2670
- OSV: https://osv.dev/vulnerability/CVE-2026-2670

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-2670/
Summaries are generated and may contain mistakes; the official description above is the record.