{"cve":{"cve_id":"CVE-2021-33716","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":0.00245,"epss_percentile":0.15442,"epss_as_of":"2026-06-23","description":"A vulnerability has been identified in SIMATIC CP 1543-1 (incl. SIPLUS variants) (All versions < V3.0), SIMATIC CP 1545-1 (All versions < V1.1). An attacker with access to the subnet of the affected device could retrieve sensitive information stored in cleartext.","published_at":"2021-09-14T10:47:34Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"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-312"],"nvd_references":["https://cert-portal.siemens.com/productcert/pdf/ssa-535997.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":"2026-06-28T23:15:44.549352Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-cp-1543-1-incl.-siplus-variants","product_name":"SIMATIC CP 1543-1 (incl. SIPLUS variants)","version_start":"All versions < V3.0","version_start_inclusive":true,"version_end":"All versions < V3.0","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-cp-1543-1-incl.-siplus-variants:All versions < V3.0:All versions < V3.0"},{"vendor_slug":"siemens","vendor_name":"Siemens","product_slug":"simatic-cp-1545-1","product_name":"SIMATIC CP 1545-1","version_start":"All versions < V1.1","version_start_inclusive":true,"version_end":"All versions < V1.1","version_end_inclusive":true,"cpe23_uri":"cve5:siemens:simatic-cp-1545-1:All versions < V1.1:All versions < V1.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-535997.pdf","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2021-09-14T10:47:34Z","label":"CVE published","source":null}]}