# CVE-2019-10922: Auth bypass in SIMATIC PCS 7 V8.0 and earlier

> Unauthenticated attackers can execute arbitrary code on SIMATIC PCS 7 and WinCC systems if encrypted communication is disabled.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 14 May 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6j2f-925p-c58v

## What is CVE-2019-10922?

CVE-2019-10922 is a critical authentication bypass vulnerability in Siemens AG SIMATIC PCS 7 V8.0 and earlier, published on 14 May 2019. 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 SIMATIC PCS 7 V8.0 and earlier (All versions), SIMATIC PCS 7 V8.1 and newer (All versions), SIMATIC WinCC V7.2 and earlier (All versions), SIMATIC WinCC V7.3 and newer (All versions). An attacker with network access to affected installations, which are configured without "Encrypted Communication", can execute arbitrary code. The security vulnerability could be exploited by an unauthenticated attacker with network access to the affected installation. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2019-10922?

It affects 2 products.


Products: Siemens Simatic Pcs 7, Siemens Simatic Wincc.

## How do I fix CVE-2019-10922?

No fix has been published for CVE-2019-10922 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-10922 being exploited?

There is no known exploitation of CVE-2019-10922 in the wild and no public exploit code.

## Other vulnerabilities in Siemens AG SIMATIC PCS 7 V8.0 and earlier

- [CVE-2023-25910](https://insights.sbomify.com/CVE-2023-25910/): Code injection in SIMATIC PCS 7 (critical 10.0)
- [CVE-2021-40358](https://insights.sbomify.com/CVE-2021-40358/): Path traversal in SIMATIC PCS 7 V8.2 (critical 9.9)
- [CVE-2021-40360](https://insights.sbomify.com/CVE-2021-40360/): Information disclosure in SIMATIC PCS 7 V8.2 (high 8.8)
- [CVE-2019-10916](https://insights.sbomify.com/CVE-2019-10916/): SQL injection in SIMATIC PCS 7 V8.0 and earlier (high 8.8)
- [CVE-2019-10918](https://insights.sbomify.com/CVE-2019-10918/): Privilege escalation in SIMATIC PCS 7 V8.0 and earlier (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10922 and fix it if it is affected.

What it is: CVE-2019-10922 is a critical authentication bypass vulnerability in Siemens AG SIMATIC PCS 7 V8.0 and earlier, published on 14 May 2019. 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-2019-10922 in the wild and no public exploit code.

Affected product: Siemens AG SIMATIC PCS 7 V8.0 and earlier. 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-2019-10922/ (Markdown: https://insights.sbomify.com/CVE-2019-10922/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10922
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10922
- OSV: https://osv.dev/vulnerability/CVE-2019-10922

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-10922/
Summaries are generated and may contain mistakes; the official description above is the record.