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Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the prog.cgi binary, which handles HNAP requests made to the lighttpd webserver listening on TCP ports 80 and 443. The issue results from the lack of proper validation of a user-supplied string before copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-21671.","D-Link DIR-3040 HTTP Request Processing Referer Heap-Based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent at...","2024-05-03T03:15:35.553","2026-06-17T06:21:13.943",8.8,"CVSS:3.1\u002FAV:A\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":29,"CVSSMetricV2":36,"CVSSMetricV40":37},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"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","ADJACENT_NETWORK","LOW","NONE","UNCHANGED","HIGH",null,2.8,5.9,[30],{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":27,"ImpactScore":28},"zdi-disclosures@trendmicro.com","Secondary",{"Version":34,"VectorString":35,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"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},"3.0","CVSS:3.0\u002FAV:A\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",[],[],0.01038,[38,38,38,38,38,38,38],"High",[42,47],{"vendor":43,"product":44,"version":45,"criteria":46,"vulnerable":4},"dlink","dir-3040_firmware","*","cpe:2.3:o:dlink:dir-3040_firmware:*:*:*:*:*:*:*:*",{"vendor":43,"product":48,"version":49,"criteria":50,"vulnerable":51},"dir-3040","-","cpe:2.3:h:dlink:dir-3040:-:*:*:*:*:*:*:*",false,2,[54,60,65,67],{"url":55,"source":56,"tags":57},"https:\u002F\u002Fsupportannouncement.us.dlink.com\u002Fannouncement\u002Fpublication.aspx?name=SAP10350","Dlink",[58,59],"Patch","Vendor Advisory",{"url":61,"source":62,"tags":63},"https:\u002F\u002Fwww.zerodayinitiative.com\u002Fadvisories\u002FZDI-23-1337\u002F","Zerodayinitiative",[64],"Third Party Advisory",{"url":55,"source":56,"tags":66},[58,59],{"url":61,"source":62,"tags":68},[64],4,[71,79],{"id":72,"name":73,"description":74,"extendedDescription":75,"status":76,"abstraction":77,"structure":78},"CWE-122","Heap-based Buffer Overflow","A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().","","Draft","Variant","Simple",{"id":80,"name":81,"description":82,"extendedDescription":75,"status":76,"abstraction":83,"structure":78},"CWE-787","Out-of-bounds Write","The product writes data past the end, or before the beginning, of the intended buffer.","Base",[],{"title":86,"metaDescription":87,"keywords":88,"canonicalUrl":89,"structuredData":90},"What is CVE-2023-41229? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2023-41229, a high severity cyber security vulnerability from 2024. D-Link DIR-3040 HTTP Request Processing Referer Heap-Based ...","CVE-2023-41229, CVE-2023-41229 vulnerability, CVE-2023-41229 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, dlink security, dir-3040_firmware vulnerability, dir-3040 vulnerability","\u002Fwhat-is\u002Fcve-2023-41229",{"@context":91,"@type":92,"headline":86,"description":87,"datePublished":10,"dateModified":11,"author":93,"publisher":97,"about":101,"mainEntityOfPage":105,"articleSection":108,"keywords":109},"https:\u002F\u002Fschema.org","TechArticle",{"@type":94,"name":95,"url":96},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":94,"name":95,"url":96,"logo":98},{"@type":99,"url":100},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":102,"name":6,"description":103,"additionalType":104},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":106,"@id":107},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2023-41229","Cybersecurity","CVE-2023-41229, CVE-2023-41229 vulnerability, CVE-2023-41229 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[111],{"Operator":112,"Negate":26,"Nodes":113},"AND",[114,120],{"Operator":115,"Negate":51,"CPEMatch":116},"OR",[117],{"Vulnerable":4,"Criteria":46,"MatchCriteriaID":118,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":119},"FE85C913-4C4E-44C3-9E06-0A822FA8E001","1.20b03",{"Operator":115,"Negate":51,"CPEMatch":121},[122],{"Vulnerable":51,"Criteria":50,"MatchCriteriaID":123,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"A4EDA686-7BB6-49CB-8370-E0E5F53914A8",[],[],{"lastModified":11,"cacheTime":127,"version":128},1792232032755,"2.0",{"score":130,"band":131,"action":132,"scoredAt":133},47,"Medium","Plan remediation","2026-10-16T07:01:52.13141+00:00"]