# CVE-2021-44165: Memory corruption in POWER METER SICAM Q100

> A buffer overflow in the web application allows remote attackers with engineer or admin privileges to execute arbitrary code on Siemens SICAM Q100 power meters.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-rwp6-cpw3-hxxx

## What is CVE-2021-44165?

CVE-2021-44165 is a high-severity memory corruption vulnerability in Siemens POWER METER SICAM Q100, published on 14 Dec 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability has been identified in POWER METER SICAM Q100 (All versions < V2.41), POWER METER SICAM Q100 (All versions < V2.41), POWER METER SICAM Q100 (All versions < V2.41), POWER METER SICAM Q100 (All versions < V2.41). The affected firmware contains a buffer overflow vulnerability in the web application that could allow a remote attacker with engineer or admin priviliges to potentially perform remote code execution.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2021-44165?

It affects 4 products.


Products: Siemens 7kg9501-0aa01-0aa1 Firmware, Siemens 7kg9501-0aa01-2aa1 Firmware, Siemens 7kg9501-0aa31-0aa1 Firmware, Siemens 7kg9501-0aa31-2aa1 Firmware.

## How do I fix CVE-2021-44165?

No fix has been published for CVE-2021-44165 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44165 being exploited?

There is no known exploitation of CVE-2021-44165 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44165 and fix it if it is affected.

What it is: CVE-2021-44165 is a high-severity memory corruption vulnerability in Siemens POWER METER SICAM Q100, published on 14 Dec 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-44165 in the wild and no public exploit code.

Affected product: Siemens POWER METER SICAM Q100. 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-2021-44165/ (Markdown: https://insights.sbomify.com/CVE-2021-44165/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44165
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44165
- OSV: https://osv.dev/vulnerability/CVE-2021-44165

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-44165/
Summaries are generated and may contain mistakes; the official description above is the record.