# CVE-2022-31766: Other in RUGGEDCOM RM1224 LTE(4G) EU > An improper input validation vulnerability in Siemens SCALANCE routers allows attackers to cause a denial of service. - **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** No - **Published:** 11 Oct 2022 - **Updated:** 21 Apr 2025 - **Also known as:** GHSA-gh7w-58g5-rmwx ## What is CVE-2022-31766? CVE-2022-31766 is a high-severity vulnerability in Siemens RUGGEDCOM RM1224 LTE(4G) EU, published on 11 Oct 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 RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) (All versions < V7.1.2), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) (All versions < V7.1.2), SCALANCE M804PB (6GK5804-0AP00-2AA2) (All versions < V7.1.2), SCALANCE M812-1 ADSL-Router (6GK5812-1AA00-2AA2) (All versions < V7.1.2), SCALANCE M812-1 ADSL-Router (6GK5812-1BA00-2AA2) (All versions < V7.1.2), SCALANCE M816-1 ADSL-Router (6GK5816-1AA00-2AA2) (All versions < V7.1.2), SCALANCE M816-1 ADSL-Router (6GK5816-1BA00-2AA2) (All versions < V7.1.2), SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) (All versions < V7.1.2), SCALANCE M874-2 (6GK5874-2AA00-2AA2) (All versions < V7.1.2), SCALANCE M874-3 (6GK5874-3AA00-2AA2) (All versions < V7.1.2), SCALANCE M876-3 (6GK5876-3AA02-2BA2) (All versions < V7.1.2), SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) (All versions < V7.1.2), SCALANCE M876-4 (6GK5876-4AA10-2BA2) (All versions < V7.1.2), SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) (All versions < V7.1.2), SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) (All versions < V7.1.2), SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) (All versions < V7.1.2), SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) (All versions < V7.1.2), SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) (All versions < V7.1.2), SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2) (All versions < V7.1.2), SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2) (All versions < V7.1.2), SCALANCE WAM763-1 (6GK5763-1AL00-7DA0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WAM766-1 (6GK5766-1GE00-7DA0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WAM766-1 (US) (6GK5766-1GE00-7DB0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WAM766-1 EEC (6GK5766-1GE00-7TA0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WAM766-1 EEC (US) (6GK5766-1GE00-7TB0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WUM763-1 (6GK5763-1AL00-3AA0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WUM763-1 (6GK5763-1AL00-3DA0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WUM766-1 (6GK5766-1GE00-3DA0) (All versions >= V1.1.0 < V3.0.0), SCALANCE WUM766-1 (USA) (6GK5766-1GE00-3DB0) (All versions >= V1.1.0 < V3.0.0). Affected devices with TCP Event service enabled do not properly handle malformed packets. This could allow an unauthenticated remote attacker to cause a denial of service condition and reboot the device thus possibly affecting other network resources. Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2022-31766? It affects 16 products. Products: Siemens Ruggedcom Rm1224 Firmware, Siemens Scalance M804pb Firmware, Siemens Scalance M812-1 Firmware, Siemens Scalance M816-1 Firmware, Siemens Scalance M826-2 Firmware, Siemens Scalance M874-2 Firmware, Siemens Scalance M874-3 Firmware, Siemens Scalance M876-3 Firmware, Siemens Scalance M876-4 Firmware, Siemens Scalance Mum853-1 Firmware, Siemens Scalance Mum856-1 Firmware, Siemens Scalance S615 Firmware, Siemens Scalance Wam763-1 Firmware, Siemens Scalance Wam766-1 Firmware, Siemens Scalance Wum763-1 Firmware, Siemens Scalance Wum766-1 Firmware. ## How do I fix CVE-2022-31766? No fix has been published for CVE-2022-31766 yet. Limit exposure of the affected software until one is available. ## Is CVE-2022-31766 being exploited? There is no known exploitation of CVE-2022-31766 in the wild and no public exploit code. ## Other vulnerabilities in Siemens RUGGEDCOM RM1224 LTE(4G) EU - [CVE-2021-25676](https://insights.sbomify.com/CVE-2021-25676/): Denial of service in RUGGEDCOM RM1224 (high 7.5) - [CVE-2021-25667](https://insights.sbomify.com/CVE-2021-25667/): Memory corruption in RUGGEDCOM RM1224 (medium 6.5) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2022-31766 and fix it if it is affected. What it is: CVE-2022-31766 is a high-severity vulnerability in Siemens RUGGEDCOM RM1224 LTE(4G) EU, published on 11 Oct 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-2022-31766 in the wild and no public exploit code. Affected product: Siemens RUGGEDCOM RM1224 LTE(4G) EU. 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-2022-31766/ (Markdown: https://insights.sbomify.com/CVE-2022-31766/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31766 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31766 - OSV: https://osv.dev/vulnerability/CVE-2022-31766 --- From sbomify Insights: https://insights.sbomify.com/CVE-2022-31766/ Summaries are generated and may contain mistakes; the official description above is the record.