# Integer overflow in Siemens RUGGEDCOM i800 and others

CVE record · `CVE-2021-42019`

- **Identifiers:** `CVE-2021-42019`
- **State:** Confirmed
- **Severity:** CVSS 5.9 Medium
- **Critical:** No
- **CNA:** siemens
- **Weakness (CWE):** [CWE-190](https://cwe.mitre.org/data/definitions/190.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md)
- **Technologies:** [Siemens RUGGEDCOM i800](https://agentprime.io/advisories/technology/siemens-ruggedcom-i800.md) · [Siemens RUGGEDCOM i800NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-i800nc.md) · [Siemens RUGGEDCOM i801](https://agentprime.io/advisories/technology/siemens-ruggedcom-i801.md) · [Siemens RUGGEDCOM i801NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-i801nc.md) · [Siemens RUGGEDCOM i802](https://agentprime.io/advisories/technology/siemens-ruggedcom-i802.md) · [Siemens RUGGEDCOM i802NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-i802nc.md) · [Siemens RUGGEDCOM i803](https://agentprime.io/advisories/technology/siemens-ruggedcom-i803.md) · [Siemens RUGGEDCOM i803NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-i803nc.md) · [Siemens RUGGEDCOM M2100](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2100.md) · [Siemens RUGGEDCOM M2100F](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2100f.md) · [Siemens RUGGEDCOM M2100NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2100nc.md) · [Siemens RUGGEDCOM M2200](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2200.md) · [Siemens RUGGEDCOM M2200F](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2200f.md) · [Siemens RUGGEDCOM M2200NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2200nc.md) · [Siemens RUGGEDCOM M969](https://agentprime.io/advisories/technology/siemens-ruggedcom-m969.md) · [Siemens RUGGEDCOM M969F](https://agentprime.io/advisories/technology/siemens-ruggedcom-m969f.md) · [Siemens RUGGEDCOM M969NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-m969nc.md) · [Siemens RUGGEDCOM RMC30](https://agentprime.io/advisories/technology/siemens-ruggedcom-rmc30.md) · [Siemens RUGGEDCOM RMC30NC](https://agentprime.io/advisories/technology/siemens-ruggedcom-rmc30nc.md) · [Siemens RUGGEDCOM RMC8388 V4.X](https://agentprime.io/advisories/technology/siemens-ruggedcom-rmc8388-v4-x.md)
- **Published:** 8 Mar 2022
- **Updated:** 12 Aug 2025
- **Reviewed by a person:** No

Published by the CVE Program (CNA: siemens) at 8 Mar 2022, 11:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Siemens. Product: RUGGEDCOM i800.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i800NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i801.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i801NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i802.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i802NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i803.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM i803NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M2100.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M2100F.
  - affected: `before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M2100NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M2200.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M2200F.
  - affected: `before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M2200NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M969.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M969F.
  - affected: `before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM M969NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RMC30.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RMC30NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RMC8388 V4.X.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RMC8388 V5.X.
  - affected: `before V5.6.0` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RMC8388NC V4.X.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RMC8388NC V5.X.
  - affected: `before V5.6.0` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RP110.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RP110NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS1600.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS1600F.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS1600FNC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS1600NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS1600T.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS1600TNC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS400.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS400F.
  - affected: `before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS400NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS401.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS401NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS416.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS416F.
  - affected: `before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS416NC.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: RUGGEDCOM RS416NCv2 V4.X.
  - affected: `before V4.3.8` (custom)
  - Other versions: unknown

And 112 more products. The full list is on the CVE record: <https://www.cve.org/CVERecord?id=CVE-2021-42019>

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 5.9 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C`, from CNA (siemens)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0092, the 60th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 8 Mar 2022. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2021-42019](https://www.cve.org/CVERecord?id=CVE-2021-42019)
- [NVD: CVE-2021-42019](https://nvd.nist.gov/vuln/detail/CVE-2021-42019)

### References from the CNA

- <https://cert-portal.siemens.com/productcert/pdf/ssa-256353.pdf>
- <https://cert-portal.siemens.com/productcert/html/ssa-256353.html>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2021-42019>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2021-42019/>. Everything for agents: <https://agentprime.io/llms.txt>.