# CVE-2026-73175: Denial of service in EKI-1242EIMS

> An adjacent unauthenticated attacker can exhaust the session pool of the Advantech EKI-1242EIMS OPC UA gateway, causing a complete denial of service.

- **Severity:** High 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **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:** 16 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-mvv7-vr4g-xvmv

## What is CVE-2026-73175?

CVE-2026-73175 is a high-severity denial of service vulnerability in Advantech EKI-1242EIMS, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Nozomi Networks Labs identified a CWE-400: Uncontrolled Resource Consumption vulnerability in the OPC UA gateway component of Advantech EKI-1242EIMS in firmware version V1.06.01 that allows an adjacent unauthenticated attacker to exhaust the server session pool and cause a complete denial of service to all legitimate OPC UA clients by opening multiple anonymous sessions.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-73175?


## How do I fix CVE-2026-73175?

No fix has been published for CVE-2026-73175 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73175 being exploited?

There is no known exploitation of CVE-2026-73175 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73175 and fix it if it is affected.

What it is: CVE-2026-73175 is a high-severity denial of service vulnerability in Advantech EKI-1242EIMS, published on 16 Sep 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-2026-73175 in the wild and no public exploit code.

Affected product: Advantech EKI-1242EIMS. 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-2026-73175/ (Markdown: https://insights.sbomify.com/CVE-2026-73175/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73175
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73175
- OSV: https://osv.dev/vulnerability/CVE-2026-73175

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-73175/
Summaries are generated and may contain mistakes; the official description above is the record.