# Buffer overflow in Siemens RUGGEDCOM i800 and others CVE record · `CVE-2021-31895` - **Identifiers:** `CVE-2021-31895` - **State:** Confirmed - **Severity:** CVSS 8.1 High - **Critical:** No - **CNA:** siemens - **Weakness (CWE):** [CWE-120](https://cwe.mitre.org/data/definitions/120.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 i801](https://agentprime.io/advisories/technology/siemens-ruggedcom-i801.md) · [Siemens RUGGEDCOM i802](https://agentprime.io/advisories/technology/siemens-ruggedcom-i802.md) · [Siemens RUGGEDCOM i803](https://agentprime.io/advisories/technology/siemens-ruggedcom-i803.md) · [Siemens RUGGEDCOM M2100](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2100.md) · [Siemens RUGGEDCOM M2200](https://agentprime.io/advisories/technology/siemens-ruggedcom-m2200.md) · [Siemens RUGGEDCOM M969](https://agentprime.io/advisories/technology/siemens-ruggedcom-m969.md) · [Siemens RUGGEDCOM RMC30](https://agentprime.io/advisories/technology/siemens-ruggedcom-rmc30.md) · [Siemens RUGGEDCOM RMC8388 V4.X](https://agentprime.io/advisories/technology/siemens-ruggedcom-rmc8388-v4-x.md) · [Siemens RUGGEDCOM RMC8388 V5.X](https://agentprime.io/advisories/technology/siemens-ruggedcom-rmc8388-v5-x.md) · [Siemens RUGGEDCOM RP110](https://agentprime.io/advisories/technology/siemens-ruggedcom-rp110.md) · [Siemens RUGGEDCOM RS1600](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs1600.md) · [Siemens RUGGEDCOM RS1600F](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs1600f.md) · [Siemens RUGGEDCOM RS1600T](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs1600t.md) · [Siemens RUGGEDCOM RS400](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs400.md) · [Siemens RUGGEDCOM RS401](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs401.md) · [Siemens RUGGEDCOM RS416](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs416.md) · [Siemens RUGGEDCOM RS416P](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs416p.md) · [Siemens RUGGEDCOM RS416Pv2 V4.X](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs416pv2-v4-x.md) · [Siemens RUGGEDCOM RS416Pv2 V5.X](https://agentprime.io/advisories/technology/siemens-ruggedcom-rs416pv2-v5-x.md) - **Published:** 13 Jul 2021 - **Updated:** 14 Oct 2025 - **Reviewed by a person:** No Published by the CVE Program (CNA: siemens) at 13 Jul 2021, 11:02 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: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM i801. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM i802. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM i803. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM M2100. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM M2200. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM M969. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RMC30. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RMC8388 V4.X. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RMC8388 V5.X. - affected: `before V5.5.4` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RP110. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS1600. - affected: `before V4.3.7` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS1600F. - affected: `before V4.3.7` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS1600T. - affected: `before V4.3.7` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS400. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS401. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS416. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS416P. - affected: `before V4.3.7` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS416Pv2 V4.X. - affected: `before V4.3.7` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS416Pv2 V5.X. - affected: `before V5.5.4` (custom) - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS416v2 V4.X. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS416v2 V5.X. - affected: `All versions < 5.5.4` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS8000. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS8000A. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS8000H. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS8000T. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900 (32M) V4.X. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900 (32M) V5.X. - affected: `All versions < V5.5.4` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900G. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900G (32M) V4.X. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900G (32M) V5.X. - affected: `All versions < V5.5.4` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900GP. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900L. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS900W. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS910. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS910L. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS910W. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS920L. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS920W. - affected: `All versions < V4.3.7` - Other versions: unknown - Vendor: Siemens. Product: RUGGEDCOM RS930L. - affected: `All versions < V4.3.7` - Other versions: unknown And 29 more products. The full list is on the CVE record: ## 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 - 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C`, from CNA (siemens) - **CISA KEV:** Not listed. - **EPSS:** 0.022, the 82nd 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 13 Jul 2021. New records show when each source confirmed them. ## Sources - [CVE List: CVE-2021-31895](https://www.cve.org/CVERecord?id=CVE-2021-31895) - [NVD: CVE-2021-31895](https://nvd.nist.gov/vuln/detail/CVE-2021-31895) ### References from the CNA - - 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 (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .