# CVE-2023-1150: WAGO: Series 750-3x/-8x prone to MODBUS server DoS

> Unauthenticated remote attackers can cause a denial of service on WAGO MODBUS servers by sending specially crafted packets.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jun 2023
- **Updated:** 5 Dec 2024
- **Also known as:** GHSA-phj7-pw7p-pxq8

## What is CVE-2023-1150?

CVE-2023-1150 is a high-severity denial of service vulnerability in WAGO 750-332, published on 26 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Uncontrolled resource consumption in Series WAGO 750-3x/-8x products may allow an unauthenticated remote attacker to DoS the MODBUS server with specially crafted packets.

Weakness: CWE-772 (Missing Release of Resource after Effective Lifetime)

## Which versions are affected by CVE-2023-1150?

It affects 18 products.


Products: Wago 750-362\/000-001 Firmware, Wago 750-362\/040-000 Firmware, Wago 750-362 Firmware, Wago 750-363\/040-000 Firmware, Wago 750-363 Firmware, Wago 750-364\/040-010 Firmware, Wago 750-365\/040-010 Firmware, Wago 750-823 Firmware, Wago 750-832\/000-002 Firmware, Wago 750-832 Firmware, Wago 750-862 Firmware, Wago 750-890\/025-000 Firmware, Wago 750-890\/025-001 Firmware, Wago 750-890\/025-002 Firmware, Wago 750-890\/040-000 Firmware, Wago 750-890 Firmware, Wago 750-891 Firmware, Wago 750-893 Firmware.

## How do I fix CVE-2023-1150?

No fix has been published for CVE-2023-1150 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1150 being exploited?

There is no known exploitation of CVE-2023-1150 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1150 and fix it if it is affected.

What it is: CVE-2023-1150 is a high-severity denial of service vulnerability in WAGO 750-332, published on 26 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-1150 in the wild and no public exploit code.

Affected product: WAGO 750-332. 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-2023-1150/ (Markdown: https://insights.sbomify.com/CVE-2023-1150/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1150
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1150
- OSV: https://osv.dev/vulnerability/CVE-2023-1150

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1150/
Summaries are generated and may contain mistakes; the official description above is the record.