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Affected products incorrectly validate TCP sequence numbers. This could allow an unauthenticated remote attacker to create a denial of service condition by injecting spoofed TCP RST packets.","A vulnerability has been identified in SIMATIC CP 343-1 (6GK7343-1EX30-0XE0) (All versions), SIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0) (All versions), SIPLU...","2024-02-13T09:15:46.83","2026-06-17T06:40:57.75",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":33,"CVSSMetricV2":34,"CVSSMetricV40":35},[16,29],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"productcert@siemens.com","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH",null,3.9,3.6,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},[],[],[],0.00597,[36,36,36,36,36,36,36],"High",[40,46,50,53,56,59,62,65],{"vendor":41,"product":42,"version":43,"criteria":44,"vulnerable":45},"siemens","simatic_cp_343-1","-","cpe:2.3:h:siemens:simatic_cp_343-1:-:*:*:*:*:*:*:*",false,{"vendor":41,"product":47,"version":48,"criteria":49,"vulnerable":4},"simatic_cp_343-1_firmware","*","cpe:2.3:o:siemens:simatic_cp_343-1_firmware:*:*:*:*:*:*:*:*",{"vendor":41,"product":51,"version":43,"criteria":52,"vulnerable":45},"simatic_cp_343-1_lean","cpe:2.3:h:siemens:simatic_cp_343-1_lean:-:*:*:*:*:*:*:*",{"vendor":41,"product":54,"version":43,"criteria":55,"vulnerable":4},"simatic_cp_343-1_lean_firmware","cpe:2.3:o:siemens:simatic_cp_343-1_lean_firmware:-:*:*:*:*:*:*:*",{"vendor":41,"product":57,"version":43,"criteria":58,"vulnerable":45},"siplus_net_cp_343-1","cpe:2.3:h:siemens:siplus_net_cp_343-1:-:*:*:*:*:*:*:*",{"vendor":41,"product":60,"version":43,"criteria":61,"vulnerable":4},"siplus_net_cp_343-1_firmware","cpe:2.3:o:siemens:siplus_net_cp_343-1_firmware:-:*:*:*:*:*:*:*",{"vendor":41,"product":63,"version":43,"criteria":64,"vulnerable":45},"siplus_net_cp_343-1_lean","cpe:2.3:h:siemens:siplus_net_cp_343-1_lean:-:*:*:*:*:*:*:*",{"vendor":41,"product":66,"version":43,"criteria":67,"vulnerable":4},"siplus_net_cp_343-1_lean_firmware","cpe:2.3:o:siemens:siplus_net_cp_343-1_lean_firmware:-:*:*:*:*:*:*:*",8,[70,75],{"url":71,"source":72,"tags":73},"https:\u002F\u002Fcert-portal.siemens.com\u002Fproductcert\u002Fhtml\u002Fssa-516818.html","Siemens",[74],"Vendor Advisory",{"url":71,"source":72,"tags":76},[74],2,[79],{"id":80,"name":81,"description":82,"extendedDescription":83,"status":84,"abstraction":85,"structure":86},"CWE-940","Improper Verification of Source of a Communication Channel","The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.","When an attacker can successfully establish a communication channel from an untrusted origin, the attacker may be able to gain privileges and access unexpected functionality.","Incomplete","Base","Simple",1,[],{"title":90,"metaDescription":91,"keywords":92,"canonicalUrl":93,"structuredData":94},"What is CVE-2023-51440? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2023-51440, a high severity cyber security vulnerability from 2024. A vulnerability has been identified in SIMATIC CP 343-1 (6G...","CVE-2023-51440, CVE-2023-51440 vulnerability, CVE-2023-51440 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2024, CVSS score, exploit, patch, remediation, siemens security, simatic_cp_343-1 vulnerability, simatic_cp_343-1_firmware vulnerability, simatic_cp_343-1_lean vulnerability, simatic_cp_343-1_lean_firmware vulnerability, siplus_net_cp_343-1 vulnerability","\u002Fwhat-is\u002Fcve-2023-51440",{"@context":95,"@type":96,"headline":90,"description":91,"datePublished":10,"dateModified":11,"author":97,"publisher":101,"about":105,"mainEntityOfPage":109,"articleSection":112,"keywords":113},"https:\u002F\u002Fschema.org","TechArticle",{"@type":98,"name":99,"url":100},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":98,"name":99,"url":100,"logo":102},{"@type":103,"url":104},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":106,"name":6,"description":107,"additionalType":108},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":110,"@id":111},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2023-51440","Cybersecurity","CVE-2023-51440, CVE-2023-51440 vulnerability, CVE-2023-51440 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[115,127,137,147],{"Operator":116,"Negate":26,"Nodes":117},"AND",[118,123],{"Operator":119,"Negate":45,"CPEMatch":120},"OR",[121],{"Vulnerable":45,"Criteria":44,"MatchCriteriaID":122,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"C100D7C1-EAD2-455D-8A72-5BBBD85F2F77",{"Operator":119,"Negate":45,"CPEMatch":124},[125],{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":126,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"611E1F0F-D55F-4F40-87A0-4783876182B0",{"Operator":116,"Negate":26,"Nodes":128},[129,133],{"Operator":119,"Negate":45,"CPEMatch":130},[131],{"Vulnerable":45,"Criteria":52,"MatchCriteriaID":132,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"EE2A18E2-F88F-4DC1-81E9-AC836C85A248",{"Operator":119,"Negate":45,"CPEMatch":134},[135],{"Vulnerable":4,"Criteria":55,"MatchCriteriaID":136,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"065874F0-45A3-45D8-8EAC-657B04567570",{"Operator":116,"Negate":26,"Nodes":138},[139,143],{"Operator":119,"Negate":45,"CPEMatch":140},[141],{"Vulnerable":45,"Criteria":58,"MatchCriteriaID":142,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"C04E90BF-FA49-40B2-AEA2-A64A6E5A8B77",{"Operator":119,"Negate":45,"CPEMatch":144},[145],{"Vulnerable":4,"Criteria":61,"MatchCriteriaID":146,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"E5941347-0E16-41D1-BC6C-4FC62916F20F",{"Operator":116,"Negate":26,"Nodes":148},[149,153],{"Operator":119,"Negate":45,"CPEMatch":150},[151],{"Vulnerable":45,"Criteria":64,"MatchCriteriaID":152,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"31A4A9A6-25FF-4FEF-8081-E827CCC87FAF",{"Operator":119,"Negate":45,"CPEMatch":154},[155],{"Vulnerable":4,"Criteria":67,"MatchCriteriaID":156,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"98B87B82-1949-498F-A922-8DF26B9F6414",[],[],{"lastModified":11,"cacheTime":160,"version":161},1792371345023,"2.0",{"score":163,"band":164,"action":165,"scoredAt":166},46,"Medium","Plan remediation","2026-10-16T07:00:47.320098+00:00"]