# Improper input validation in Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7 and others CVE record · `CVE-2018-4843` - **Identifiers:** `CVE-2018-4843` - **State:** Confirmed - **Severity:** CVSS 6.5 Medium - **Critical:** No - **CNA:** siemens - **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html) - **Tags:** [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md) - **Technologies:** [Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7](https://agentprime.io/advisories/technology/siemens-simatic-s7-400-cpu-414-3-pn-dp-v7.md) · [Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7](https://agentprime.io/advisories/technology/siemens-simatic-s7-400-cpu-414f-3-pn-dp-v7.md) · [Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7](https://agentprime.io/advisories/technology/siemens-simatic-s7-400-cpu-416-3-pn-dp-v7.md) · [Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7](https://agentprime.io/advisories/technology/siemens-simatic-s7-400-cpu-416f-3-pn-dp-v7.md) · [Siemens SIMATIC CP 343-1 (incl. SIPLUS variants)](https://agentprime.io/advisories/technology/siemens-simatic-cp-343-1-incl-siplus-variants.md) · [Siemens SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)](https://agentprime.io/advisories/technology/siemens-simatic-cp-343-1-advanced-incl-siplus-variants.md) · [Siemens SIMATIC CP 443-1](https://agentprime.io/advisories/technology/siemens-simatic-cp-443-1.md) · [Siemens SIMATIC CP 443-1 Advanced](https://agentprime.io/advisories/technology/siemens-simatic-cp-443-1-advanced.md) · [Siemens SIMATIC ET 200pro IM154-8 PN/DP CPU](https://agentprime.io/advisories/technology/siemens-simatic-et-200pro-im154-8-pn-dp-cpu.md) · [Siemens SIMATIC ET 200pro IM154-8F PN/DP CPU](https://agentprime.io/advisories/technology/siemens-simatic-et-200pro-im154-8f-pn-dp-cpu.md) · [Siemens SIMATIC ET 200pro IM154-8FX PN/DP CPU](https://agentprime.io/advisories/technology/siemens-simatic-et-200pro-im154-8fx-pn-dp-cpu.md) · [Siemens SIMATIC ET 200S IM151-8 PN/DP CPU](https://agentprime.io/advisories/technology/siemens-simatic-et-200s-im151-8-pn-dp-cpu.md) · [Siemens SIMATIC ET 200S IM151-8F PN/DP CPU](https://agentprime.io/advisories/technology/siemens-simatic-et-200s-im151-8f-pn-dp-cpu.md) · [Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)](https://agentprime.io/advisories/technology/siemens-simatic-s7-1500-cpu-family-incl-related-et200-cpus-and-siplus-variants.md) · [Siemens SIMATIC S7-1500 Software Controller](https://agentprime.io/advisories/technology/siemens-simatic-s7-1500-software-controller.md) · [Siemens SIMATIC S7-300 CPU 314C-2 PN/DP](https://agentprime.io/advisories/technology/siemens-simatic-s7-300-cpu-314c-2-pn-dp.md) · [Siemens SIMATIC S7-300 CPU 315-2 PN/DP](https://agentprime.io/advisories/technology/siemens-simatic-s7-300-cpu-315-2-pn-dp.md) · [Siemens SIMATIC S7-300 CPU 315F-2 PN/DP](https://agentprime.io/advisories/technology/siemens-simatic-s7-300-cpu-315f-2-pn-dp.md) · [Siemens SIMATIC S7-300 CPU 315T-3 PN/DP](https://agentprime.io/advisories/technology/siemens-simatic-s7-300-cpu-315t-3-pn-dp.md) · [Siemens SIMATIC S7-300 CPU 317-2 PN/DP](https://agentprime.io/advisories/technology/siemens-simatic-s7-300-cpu-317-2-pn-dp.md) - **Published:** 20 Mar 2018 - **Updated:** 5 Aug 2024 - **Reviewed by a person:** No Published by the CVE Program (CNA: siemens) at 20 Mar 2018, 14:00 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: SIMATIC S7-400 CPU 414-3 PN/DP V7. - affected: `All versions < V7.0.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-400 CPU 414F-3 PN/DP V7. - affected: `All versions < V7.0.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-400 CPU 416-3 PN/DP V7. - affected: `All versions < V7.0.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-400 CPU 416F-3 PN/DP V7. - affected: `All versions < V7.0.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC CP 343-1 (incl. SIPLUS variants). - affected: `All versions` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC CP 343-1 Advanced (incl. SIPLUS variants). - affected: `All versions` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC CP 443-1. - affected: `All versions < V3.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC CP 443-1. - affected: `All versions < V3.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC CP 443-1 Advanced. - affected: `All versions < V3.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC ET 200pro IM154-8 PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC ET 200pro IM154-8F PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC ET 200pro IM154-8FX PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC ET 200S IM151-8 PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC ET 200S IM151-8F PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants). - affected: `All versions < V1.7.0` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-1500 Software Controller. - affected: `All versions < V1.7.0` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 314C-2 PN/DP. - affected: `All versions < V3.3.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 315-2 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 315F-2 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 315T-3 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 317-2 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 317F-2 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 317T-3 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 317TF-3 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 319-3 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-300 CPU 319F-3 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-400 CPU 412-2 PN V7. - affected: `All versions < V7.0.3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants). - affected: `All versions < V6.0.9` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants). - affected: `All versions < V6.0.7` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC S7-410 CPU family (incl. SIPLUS variants). - affected: `All versions < V8.1` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC WinAC RTX 2010. - affected: `All versions < V2010 SP3` - Other versions: unknown - Vendor: Siemens. Product: SIMATIC WinAC RTX F 2010. - affected: `All versions < V2010 SP3` - Other versions: unknown - Vendor: Siemens. Product: SINUMERIK 828D. - affected: `All versions < V4.7 SP6 HF1` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS ET 200S IM151-8 PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS ET 200S IM151-8F PN/DP CPU. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS NET CP 443-1. - affected: `All versions < V3.3` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS NET CP 443-1 Advanced. - affected: `All versions < V3.3` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS S7-300 CPU 314C-2 PN/DP. - affected: `All versions < V3.3.16` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS S7-300 CPU 315-2 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown - Vendor: Siemens. Product: SIPLUS S7-300 CPU 315F-2 PN/DP. - affected: `All versions < V3.2.16` - Other versions: unknown And 5 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 - 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C`, from CNA (siemens) - **CISA KEV:** Not listed. - **EPSS:** 0.0054, the 45th 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 20 Mar 2018. New records show when each source confirmed them. ## Sources - [CVE List: CVE-2018-4843](https://www.cve.org/CVERecord?id=CVE-2018-4843) - [NVD: CVE-2018-4843](https://nvd.nist.gov/vuln/detail/CVE-2018-4843) ### 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: .