[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fA3flS9eASblzx0myFVobzchp5vQjzHM5Rz0e5hQER4A":3,"g5a-risk:CVE-2020-3259":172},{"success":4,"data":5,"meta":170},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":48,"epssPercentile":26,"epssTimeSeries":49,"severity":50,"affectedProducts":51,"affectedProductsCount":60,"references":61,"referencesCount":74,"weaknesses":75,"weaknessesCount":84,"isActivelyExploited":4,"cisaInfo":85,"otxData":26,"relatedBlogPosts":86,"seoMetadata":87,"configurations":112,"relatedVendorCves":154,"notableEvents":155},"CVE-2020-3259","What is CVE-2020-3259?","A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. An attacker could exploit this vulnerability by sending a crafted GET request to the web services interface. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information. Note: This vulnerability affects only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.","A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could all...","2020-05-06T17:15:12.777","2025-10-28T13:57:45.773",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:N\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":29,"CVSSMetricV2":36,"CVSSMetricV40":26},[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":23,"AvailabilityImpact":23,"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,[30],{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":27,"ImpactScore":28},"psirt@cisco.com","Secondary",{"Version":34,"VectorString":35,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":23,"AvailabilityImpact":23,"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:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:N\u002FA:N",[37],{"Source":17,"Type":18,"CVSSData":38,"BaseSeverity":44,"ExploitabilityScore":45,"ImpactScore":46,"ACInsufInfo":47,"ObtainAllPrivilege":47,"ObtainUserPrivilege":47,"ObtainOtherPrivilege":47,"UserInteractionRequired":47},{"Version":39,"VectorString":40,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":41,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":42,"BaseSeverity":43,"Exploitability":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"CollateralDamagePotential":26,"TargetDistribution":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"EnvironmentalScore":26},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:P\u002FI:N\u002FA:N","PARTIAL",5,"","MEDIUM",10,2.9,false,0.71789,[48,48,48,48,48,48,48],"High",[52,57],{"vendor":53,"product":54,"version":55,"criteria":56,"vulnerable":4},"cisco","firepower_threat_defense","*","cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*",{"vendor":53,"product":58,"version":55,"criteria":59,"vulnerable":4},"adaptive_security_appliance_software","cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*",2,[62,67,69],{"url":63,"source":64,"tags":65},"https:\u002F\u002Ftools.cisco.com\u002Fsecurity\u002Fcenter\u002Fcontent\u002FCiscoSecurityAdvisory\u002Fcisco-sa-asaftd-info-disclose-9eJtycMB","Cisco",[66],"Vendor Advisory",{"url":63,"source":64,"tags":68},[66],{"url":70,"source":71,"tags":72},"https:\u002F\u002Fwww.cisa.gov\u002Fknown-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3259","CISA",[73],"US Government Resource",3,[76],{"id":77,"name":78,"description":79,"extendedDescription":80,"status":81,"abstraction":82,"structure":83},"CWE-200","Exposure of Sensitive Information to an Unauthorized Actor","The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.","There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker.  Some kinds of sensitive information include:\nInformation might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected.  These parties include:\nInformation exposures can occur in different ways:\nIt is common practice to describe any loss of confidentiality as an \"information exposure,\" but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read.  CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.","Draft","Class","Simple",1,{"shortDescription":43,"requiredAction":43,"vulnerabilityName":43,"dateAdded":26},[],{"title":88,"metaDescription":89,"keywords":90,"canonicalUrl":91,"structuredData":92},"What is CVE-2020-3259? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2020-3259, a high severity cyber security vulnerability from 2020. High exploit probability (71.8%). A vulnerability in the web...","CVE-2020-3259, CVE-2020-3259 vulnerability, CVE-2020-3259 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2020, CVSS score, exploit, patch, remediation, cisco security, firepower_threat_defense vulnerability, adaptive_security_appliance_software vulnerability, high risk vulnerability, actively exploited, exploit available","\u002Fwhat-is\u002Fcve-2020-3259",{"@context":93,"@type":94,"headline":88,"description":89,"datePublished":10,"dateModified":11,"author":95,"publisher":99,"about":103,"mainEntityOfPage":107,"articleSection":110,"keywords":111},"https:\u002F\u002Fschema.org","TechArticle",{"@type":96,"name":97,"url":98},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":96,"name":97,"url":98,"logo":100},{"@type":101,"url":102},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":104,"name":6,"description":105,"additionalType":106},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":108,"@id":109},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2020-3259","Cybersecurity","CVE-2020-3259, CVE-2020-3259 vulnerability, CVE-2020-3259 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[113],{"Operator":26,"Negate":26,"Nodes":114},[115],{"Operator":116,"Negate":47,"CPEMatch":117},"OR",[118,122,126,130,134,138,142,146,150],{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":119,"VersionStartExcluding":26,"VersionStartIncluding":120,"VersionEndExcluding":121,"VersionEndIncluding":26},"C4B2E5D3-ED34-4A7E-BD8F-8492B6737677","6.2.3","6.2.3.16",{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":123,"VersionStartExcluding":26,"VersionStartIncluding":124,"VersionEndExcluding":125,"VersionEndIncluding":26},"9D27DE97-510A-4761-8184-6940745B54E2","6.3.0","6.3.0.6",{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":127,"VersionStartExcluding":26,"VersionStartIncluding":128,"VersionEndExcluding":129,"VersionEndIncluding":26},"06741056-2BFD-4F88-917A-F581F813B69E","6.4.0","6.4.0.9",{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":131,"VersionStartExcluding":26,"VersionStartIncluding":132,"VersionEndExcluding":133,"VersionEndIncluding":26},"3ED0E59C-146C-494F-AD46-F6FB43F9C575","6.5.0","6.5.0.5",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":135,"VersionStartExcluding":26,"VersionStartIncluding":136,"VersionEndExcluding":137,"VersionEndIncluding":26},"CEB1AF51-43DA-4399-8264-E0A2E629F799","9.8","9.8.4.20",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":139,"VersionStartExcluding":26,"VersionStartIncluding":140,"VersionEndExcluding":141,"VersionEndIncluding":26},"2CA468F1-6A40-42FB-82D6-98AE314712A3","9.9","9.9.2.67",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":143,"VersionStartExcluding":26,"VersionStartIncluding":144,"VersionEndExcluding":145,"VersionEndIncluding":26},"8CCF1EAA-45F3-4155-B8DA-F34213C911F7","9.10","9.10.1.40",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":147,"VersionStartExcluding":26,"VersionStartIncluding":148,"VersionEndExcluding":149,"VersionEndIncluding":26},"A2380A3F-D64E-4DB2-95AB-783E83DA7E51","9.12","9.12.3.9",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":151,"VersionStartExcluding":26,"VersionStartIncluding":152,"VersionEndExcluding":153,"VersionEndIncluding":26},"526A1138-61C7-44AD-A925-B38BDB353238","9.13","9.13.1.10",[],[156,163],{"id":157,"eventType":158,"eventTime":159,"details":160,"label":161,"color":162},"d5113fa3-b5ca-47af-ad83-d5c1ca71b9ce","HIGH_EPSS_DELTA","2025-10-23T05:41:09.325109+00:00","Daily EPSS score increased by 0.117 on 2023-12-30","EPSS Score Increased","red",{"id":164,"eventType":165,"eventTime":166,"details":167,"label":168,"color":169},"e0a6753d-5733-4f37-90b7-7840afa595ef","LOW_EPSS_DELTA","2025-11-19T04:06:16.661203+00:00","Daily EPSS score decreased by 0.326 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":171,"version":39},1792348009234,{"score":173,"band":50,"action":174,"scoredAt":175},81,"Emergency patch","2026-10-16T06:48:36.989102+00:00"]