{"cve":{"cve_id":"CVE-2018-4843","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00547,"epss_percentile":0.41523,"epss_as_of":"2026-06-23","description":"A vulnerability has been identified in  SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3),  SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIMATIC ET 200pro IM154-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8F PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200pro IM154-8FX PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIMATIC ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V1.7.0), SIMATIC S7-1500 Software Controller (All versions < V1.7.0), SIMATIC S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIMATIC S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 315T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317T-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 317TF-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319-3 PN/DP (All versions < V3.2.16), SIMATIC S7-300 CPU 319F-3 PN/DP (All versions < V3.2.16), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.7), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.1), SIMATIC WinAC RTX 2010 (All versions < V2010 SP3), SIMATIC WinAC RTX F 2010 (All versions < V2010 SP3), SINUMERIK 828D (All versions < V4.7 SP6 HF1), SIPLUS ET 200S IM151-8 PN/DP CPU (All versions < V3.2.16), SIPLUS ET 200S IM151-8F PN/DP CPU (All versions < V3.2.16), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3), SIPLUS S7-300 CPU 314C-2 PN/DP (All versions < V3.3.16), SIPLUS S7-300 CPU 315-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 315F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317-2 PN/DP (All versions < V3.2.16), SIPLUS S7-300 CPU 317F-2 PN/DP (All versions < V3.2.16), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), Softnet PROFINET IO for PC-based Windows systems (All versions). Responding to a PROFINET DCP request with a specially crafted PROFINET DCP packet could cause a denial of service condition of the requesting system.\r\n\r\nThe security vulnerability could be exploited by an attacker located on the same Ethernet segment (OSI Layer 2) as the targeted device. A manual restart is required to recover the system.","published_at":"2018-03-20T14:00:00Z","last_modified_at":null,"cvss_v3_score":6.5,"cvss_v3_vector":"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","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-20"],"nvd_references":["https://cert-portal.siemens.com/productcert/pdf/ssa-592007.pdf"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:11:27.844184Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"A","value_label":"Adjacent"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"},{"metric":"E","name":"E","value":"P","value_label":"Physical"},{"metric":"RL","name":"RL","value":"O","value_label":"O"},{"metric":"RC","name":"RC","value":"C","value_label":"Changed"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-cp-343-1-advanced-incl.-siplus-variants","product_name":"SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)","version_start":"All versions","version_start_inclusive":true,"version_end":"All versions","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-cp-343-1-advanced-incl.-siplus-variants:All versions:All versions"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-cp-343-1-incl.-siplus-variants","product_name":"SIMATIC CP 343-1 (incl. SIPLUS variants)","version_start":"All versions","version_start_inclusive":true,"version_end":"All versions","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-cp-343-1-incl.-siplus-variants:All versions:All versions"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-cp-443-1","product_name":"SIMATIC CP 443-1","version_start":"All versions < V3.3","version_start_inclusive":true,"version_end":"All versions < V3.3","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-cp-443-1:All versions < V3.3:All versions < V3.3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-cp-443-1-advanced","product_name":"SIMATIC CP 443-1 Advanced","version_start":"All versions < V3.3","version_start_inclusive":true,"version_end":"All versions < V3.3","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-cp-443-1-advanced:All versions < V3.3:All versions < V3.3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-et-200pro-im154-8f-pn-dp-cpu","product_name":"SIMATIC ET 200pro IM154-8F PN/DP CPU","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-et-200pro-im154-8f-pn-dp-cpu:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-et-200pro-im154-8fx-pn-dp-cpu","product_name":"SIMATIC ET 200pro IM154-8FX PN/DP CPU","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-et-200pro-im154-8fx-pn-dp-cpu:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-et-200pro-im154-8-pn-dp-cpu","product_name":"SIMATIC ET 200pro IM154-8 PN/DP CPU","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-et-200pro-im154-8-pn-dp-cpu:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-et-200s-im151-8f-pn-dp-cpu","product_name":"SIMATIC ET 200S IM151-8F PN/DP CPU","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-et-200s-im151-8f-pn-dp-cpu:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-et-200s-im151-8-pn-dp-cpu","product_name":"SIMATIC ET 200S IM151-8 PN/DP CPU","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-et-200s-im151-8-pn-dp-cpu:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-1500-cpu-family-incl.-related-et200-cpus-and-siplus-variants","product_name":"SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)","version_start":"All versions < V1.7.0","version_start_inclusive":true,"version_end":"All versions < V1.7.0","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-1500-cpu-family-incl.-related-et200-cpus-and-siplus-variants:All versions < V1.7.0:All versions < V1.7.0"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-1500-software-controller","product_name":"SIMATIC S7-1500 Software Controller","version_start":"All versions < V1.7.0","version_start_inclusive":true,"version_end":"All versions < V1.7.0","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-1500-software-controller:All versions < V1.7.0:All versions < V1.7.0"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-314c-2-pn-dp","product_name":"SIMATIC S7-300 CPU 314C-2 PN/DP","version_start":"All versions < V3.3.16","version_start_inclusive":true,"version_end":"All versions < V3.3.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-314c-2-pn-dp:All versions < V3.3.16:All versions < V3.3.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-315-2-pn-dp","product_name":"SIMATIC S7-300 CPU 315-2 PN/DP","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-315-2-pn-dp:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-315f-2-pn-dp","product_name":"SIMATIC S7-300 CPU 315F-2 PN/DP","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-315f-2-pn-dp:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-315t-3-pn-dp","product_name":"SIMATIC S7-300 CPU 315T-3 PN/DP","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-315t-3-pn-dp:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-317-2-pn-dp","product_name":"SIMATIC S7-300 CPU 317-2 PN/DP","version_start":"All versions < 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V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-317tf-3-pn-dp","product_name":"SIMATIC S7-300 CPU 317TF-3 PN/DP","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-317tf-3-pn-dp:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-319-3-pn-dp","product_name":"SIMATIC S7-300 CPU 319-3 PN/DP","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-300-cpu-319-3-pn-dp:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-300-cpu-319f-3-pn-dp","product_name":"SIMATIC S7-300 CPU 319F-3 PN/DP","version_start":"All versions < 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V7.0.3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-400-cpu-414f-3-pn-dp-v7","product_name":"SIMATIC S7-400 CPU 414F-3 PN/DP V7","version_start":"All versions < V7.0.3","version_start_inclusive":true,"version_end":"All versions < V7.0.3","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-400-cpu-414f-3-pn-dp-v7:All versions < V7.0.3:All versions < V7.0.3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-400-cpu-416-3-pn-dp-v7","product_name":"SIMATIC S7-400 CPU 416-3 PN/DP V7","version_start":"All versions < V7.0.3","version_start_inclusive":true,"version_end":"All versions < V7.0.3","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-400-cpu-416-3-pn-dp-v7:All versions < V7.0.3:All versions < V7.0.3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-s7-400-cpu-416f-3-pn-dp-v7","product_name":"SIMATIC S7-400 CPU 416F-3 PN/DP V7","version_start":"All versions < 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SIPLUS variants)","version_start":"All versions < V8.1","version_start_inclusive":true,"version_end":"All versions < V8.1","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-s7-410-cpu-family-incl.-siplus-variants:All versions < V8.1:All versions < V8.1"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-winac-rtx-2010","product_name":"SIMATIC WinAC RTX 2010","version_start":"All versions < V2010 SP3","version_start_inclusive":true,"version_end":"All versions < V2010 SP3","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-winac-rtx-2010:All versions < V2010 SP3:All versions < V2010 SP3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-winac-rtx-f-2010","product_name":"SIMATIC WinAC RTX F 2010","version_start":"All versions < V2010 SP3","version_start_inclusive":true,"version_end":"All versions < V2010 SP3","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-winac-rtx-f-2010:All versions < V2010 SP3:All versions < V2010 SP3"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"sinumerik-828d","product_name":"SINUMERIK 828D","version_start":"All versions < V4.7 SP6 HF1","version_start_inclusive":true,"version_end":"All versions < V4.7 SP6 HF1","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:sinumerik-828d:All versions < V4.7 SP6 HF1:All versions < V4.7 SP6 HF1"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"siplus-et-200s-im151-8f-pn-dp-cpu","product_name":"SIPLUS ET 200S IM151-8F PN/DP CPU","version_start":"All versions < V3.2.16","version_start_inclusive":true,"version_end":"All versions < V3.2.16","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:siplus-et-200s-im151-8f-pn-dp-cpu:All versions < V3.2.16:All versions < V3.2.16"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"siplus-et-200s-im151-8-pn-dp-cpu","product_name":"SIPLUS ET 200S IM151-8 PN/DP CPU","version_start":"All versions < 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