# CVE-2022-43723: Denial of service in SICAM PAS/PQS

> Unauthenticated remote attackers can cause a denial of service by sending crafted messages to SICAM PAS/PQS, crashing the application.

- **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:** 13 Dec 2022
- **Updated:** 22 Apr 2025
- **Also known as:** GHSA-wmxm-7j47-5ww2

## What is CVE-2022-43723?

CVE-2022-43723 is a high-severity denial of service vulnerability in Siemens SICAM PAS/PQS, published on 13 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in SICAM PAS/PQS (All versions < V7.0), SICAM PAS/PQS (All versions >= 7.0 < V8.06). Affected software does not properly validate the input for a certain parameter in the s7ontcp.dll. This could allow an unauthenticated remote attacker to send messages and create a denial of service condition as the application crashes. At the time of assigning the CVE, the affected firmware version of the component has already been superseded by succeeding mainline versions.

Weakness: CWE-20 (Improper Input Validation), CWE-1287 (Improper Validation of Specified Type of Input)

## Which versions are affected by CVE-2022-43723?

It affects 1 product.


Products: Siemens Sicam Pas\/Pqs.

## How do I fix CVE-2022-43723?

No fix has been published for CVE-2022-43723 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-43723 being exploited?

There is no known exploitation of CVE-2022-43723 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SICAM PAS/PQS

- [CVE-2022-43724](https://insights.sbomify.com/CVE-2022-43724/): Hardcoded credentials in SICAM PAS/PQS (critical 9.8)
- [CVE-2016-8567](https://insights.sbomify.com/CVE-2016-8567/): Hardcoded credentials in Siemens SICAM PAS before 8.00 (critical 9.8)
- [CVE-2016-9157](https://insights.sbomify.com/CVE-2016-9157/): Denial of service in Siemens SICAM PAS through V8.08 (critical 9.8)
- [CVE-2023-45205](https://insights.sbomify.com/CVE-2023-45205/): Privilege escalation in SICAM PAS/PQS (high 7.8)
- [CVE-2022-43722](https://insights.sbomify.com/CVE-2022-43722/): Code injection in SICAM PAS/PQS (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-43723 and fix it if it is affected.

What it is: CVE-2022-43723 is a high-severity denial of service vulnerability in Siemens SICAM PAS/PQS, published on 13 Dec 2022. 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-2022-43723 in the wild and no public exploit code.

Affected product: Siemens SICAM PAS/PQS. 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-2022-43723/ (Markdown: https://insights.sbomify.com/CVE-2022-43723/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-43723
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-43723
- OSV: https://osv.dev/vulnerability/CVE-2022-43723

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-43723/
Summaries are generated and may contain mistakes; the official description above is the record.