# CVE-2022-43439: Other in POWER METER SICAM Q100 > Improper input validation in Siemens SICAM power meters allows attackers to cause unexpected behavior or denial of service. - **Severity:** Critical 9.9 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C`) - **Exploited in the wild:** Not known - **Login needed:** Any signed-in user - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 8 Nov 2022 - **Updated:** 9 Dec 2025 - **Also known as:** GHSA-hj8w-fgm6-wx7w ## What is CVE-2022-43439? CVE-2022-43439 is a critical vulnerability in Siemens POWER METER SICAM Q100, published on 8 Nov 2022. Any signed-in user can exploit it over the network, with no action from the victim. ### Official description A vulnerability has been identified in POWER METER SICAM Q100 (7KG9501-0AA01-0AA1) (All versions < V2.50), POWER METER SICAM Q100 (7KG9501-0AA01-2AA1) (All versions < V2.50), POWER METER SICAM Q100 (7KG9501-0AA31-0AA1) (All versions < V2.50), POWER METER SICAM Q100 (7KG9501-0AA31-2AA1) (All versions < V2.50), SICAM P850 (7KG8500-0AA00-0AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA00-2AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA10-0AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA10-2AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA30-0AA0) (All versions < V3.10), SICAM P850 (7KG8500-0AA30-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA01-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA01-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA02-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA02-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA11-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA11-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA12-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA12-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA31-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA31-2AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA32-0AA0) (All versions < V3.10), SICAM P850 (7KG8501-0AA32-2AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA00-0AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA00-2AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA10-0AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA10-2AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA30-0AA0) (All versions < V3.10), SICAM P855 (7KG8550-0AA30-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA01-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA01-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA02-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA02-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA11-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA11-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA12-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA12-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA31-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA31-2AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA32-0AA0) (All versions < V3.10), SICAM P855 (7KG8551-0AA32-2AA0) (All versions < V3.10), SICAM T (All versions < V3.0). Affected devices do not properly validate the Language-parameter in requests to the web interface on port 443/tcp. This could allow an authenticated remote attacker to crash the device (followed by an automatic reboot) or to execute arbitrary code on the device. Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2022-43439? It affects 2 products. Products: Siemens 7kg9501-0aa01-2aa1 Firmware, Siemens 7kg9501-0aa31-2aa1 Firmware. ## How do I fix CVE-2022-43439? No fix has been published for CVE-2022-43439 yet. Limit exposure of the affected software until one is available. ## Is CVE-2022-43439 being exploited? There is no known exploitation of CVE-2022-43439 in the wild and no public exploit code. ## Other vulnerabilities in Siemens POWER METER SICAM Q100 - [CVE-2022-43545](https://insights.sbomify.com/CVE-2022-43545/): Code injection in POWER METER SICAM Q100 (critical 9.9) - [CVE-2022-43546](https://insights.sbomify.com/CVE-2022-43546/): Other in POWER METER SICAM Q100 (critical 9.9) - [CVE-2022-43398](https://insights.sbomify.com/CVE-2022-43398/): Auth bypass in POWER METER SICAM Q100 (high 7.5) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-43439 and fix it if it is affected. What it is: CVE-2022-43439 is a critical vulnerability in Siemens POWER METER SICAM Q100, published on 8 Nov 2022. Any signed-in user can exploit it over the network, with no action from the victim. Exploitation: There is no known exploitation of CVE-2022-43439 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-2022-43439/ (Markdown: https://insights.sbomify.com/CVE-2022-43439/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-43439 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-43439 - OSV: https://osv.dev/vulnerability/CVE-2022-43439 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-43439/ Summaries are generated and may contain mistakes; the official description above is the record.