[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fi6_Ta6wdJ7zDqqW33uYg3YQdv4AN51jir5MMqWsbBVM":3,"g5a-risk:CVE-2023-39240":137},{"success":4,"data":5,"meta":134},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":29,"epssPercentile":26,"epssTimeSeries":30,"severity":31,"affectedProducts":32,"affectedProductsCount":55,"references":56,"referencesCount":62,"weaknesses":63,"weaknessesCount":62,"isActivelyExploited":72,"cisaInfo":26,"otxData":26,"relatedBlogPosts":73,"seoMetadata":74,"configurations":99,"relatedVendorCves":132,"notableEvents":133},"CVE-2023-39240","What is CVE-2023-39240?","It is identified a format string vulnerability in ASUS RT-AX56U V2’s iperf client function API. This vulnerability is caused by lacking validation for a specific value within its set_iperf3_cli.cgi module. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service.","It is identified a format string vulnerability in ASUS RT-AX56U V2’s iperf client function API. This vulnerability is caused by lacking validation for a spec...","2023-09-07T08:15:07.71","2024-03-27T07:15:48.047",7.2,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:H\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":26,"CVSSMetricV40":26},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"twcert@cert.org.tw","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":23,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":23,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","LOW","HIGH","NONE","UNCHANGED",null,1.2,5.9,0.0128,[29,29,29,29,29,29,29],"High",[33,38,42,45,48,52],{"vendor":34,"product":35,"version":36,"criteria":37,"vulnerable":4},"asus","rt-ax55_firmware","3.0.0.4.386_50460","cpe:2.3:o:asus:rt-ax55_firmware:3.0.0.4.386_50460:*:*:*:*:*:*:*",{"vendor":34,"product":39,"version":40,"criteria":41,"vulnerable":4},"rt-ax55","-","cpe:2.3:h:asus:rt-ax55:-:*:*:*:*:*:*:*",{"vendor":34,"product":43,"version":36,"criteria":44,"vulnerable":4},"rt-ax56u_v2_firmware","cpe:2.3:o:asus:rt-ax56u_v2_firmware:3.0.0.4.386_50460:*:*:*:*:*:*:*",{"vendor":34,"product":46,"version":40,"criteria":47,"vulnerable":4},"rt-ax56u_v2","cpe:2.3:h:asus:rt-ax56u_v2:-:*:*:*:*:*:*:*",{"vendor":34,"product":49,"version":50,"criteria":51,"vulnerable":4},"rt-ac86u_firmware","3.0.0.4_386_51529","cpe:2.3:o:asus:rt-ac86u_firmware:3.0.0.4_386_51529:*:*:*:*:*:*:*",{"vendor":34,"product":53,"version":40,"criteria":54,"vulnerable":4},"rt-ac86u","cpe:2.3:h:asus:rt-ac86u:-:*:*:*:*:*:*:*",6,[57],{"url":58,"source":59,"tags":60},"https:\u002F\u002Fwww.twcert.org.tw\u002Ftw\u002Fcp-132-7356-021bf-1.html","Org",[61],"Third Party Advisory",1,[64],{"id":65,"name":66,"description":67,"extendedDescription":68,"status":69,"abstraction":70,"structure":71},"CWE-134","Use of Externally-Controlled Format String","The product uses a function that accepts a format string as an argument, but the format string originates from an external source.","When an attacker can modify an externally-controlled format string, this can lead to buffer overflows, denial of service, or data representation problems.\nIt should be noted that in some circumstances, such as internationalization, the set of format strings is externally controlled by design. If the source of these format strings is trusted (e.g. only contained in library files that are only modifiable by the system administrator), then the external control might not itself pose a vulnerability.","Draft","Base","Simple",false,[],{"title":75,"metaDescription":76,"keywords":77,"canonicalUrl":78,"structuredData":79},"What is CVE-2023-39240? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2023-39240, a high severity cyber security vulnerability from 2023. It is identified a format string vulnerability in ASUS RT-A...","CVE-2023-39240, CVE-2023-39240 vulnerability, CVE-2023-39240 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2023, CVSS score, exploit, patch, remediation, asus security, rt-ax55_firmware vulnerability, rt-ax55 vulnerability, rt-ax56u_v2_firmware vulnerability, rt-ax56u_v2 vulnerability, rt-ac86u_firmware vulnerability","\u002Fwhat-is\u002Fcve-2023-39240",{"@context":80,"@type":81,"headline":75,"description":76,"datePublished":10,"dateModified":11,"author":82,"publisher":86,"about":90,"mainEntityOfPage":94,"articleSection":97,"keywords":98},"https:\u002F\u002Fschema.org","TechArticle",{"@type":83,"name":84,"url":85},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":83,"name":84,"url":85,"logo":87},{"@type":88,"url":89},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":91,"name":6,"description":92,"additionalType":93},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":95,"@id":96},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2023-39240","Cybersecurity","CVE-2023-39240, CVE-2023-39240 vulnerability, CVE-2023-39240 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[100,112,122],{"Operator":101,"Negate":26,"Nodes":102},"AND",[103,108],{"Operator":104,"Negate":26,"CPEMatch":105},"OR",[106],{"Vulnerable":4,"Criteria":37,"MatchCriteriaID":107,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"55D08B1A-85B6-4501-8998-E308F7633DF9",{"Operator":104,"Negate":26,"CPEMatch":109},[110],{"Vulnerable":26,"Criteria":41,"MatchCriteriaID":111,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"B8F27D4F-EDC4-4676-8C66-545378850BF1",{"Operator":101,"Negate":26,"Nodes":113},[114,118],{"Operator":104,"Negate":26,"CPEMatch":115},[116],{"Vulnerable":4,"Criteria":44,"MatchCriteriaID":117,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"7201F0D9-5111-414B-8756-3B36838193CD",{"Operator":104,"Negate":26,"CPEMatch":119},[120],{"Vulnerable":26,"Criteria":47,"MatchCriteriaID":121,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"FFFF5EF7-E4EC-4DA0-82B4-9996087B951F",{"Operator":101,"Negate":26,"Nodes":123},[124,128],{"Operator":104,"Negate":26,"CPEMatch":125},[126],{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":127,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"E3A1AA3F-0CCF-41B0-B8D7-2D72D82C0261",{"Operator":104,"Negate":26,"CPEMatch":129},[130],{"Vulnerable":26,"Criteria":54,"MatchCriteriaID":131,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"89095282-ABBD-4056-B731-7F05638DB1A6",[],[],{"lastModified":11,"cacheTime":135,"version":136},1792365200663,"2.0",{"score":138,"band":139,"action":140,"scoredAt":141},48,"Medium","Plan remediation","2026-10-16T06:59:02.556524+00:00"]