[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ff7Td1WrnRHBsZ_4MdpjT2rNifCc9CxK5hjHf0qxCWnc":3,"g5a-risk:CVE-2021-23894":111},{"success":4,"data":5,"meta":109},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":46,"epssPercentile":26,"epssTimeSeries":47,"severity":48,"affectedProducts":49,"affectedProductsCount":55,"references":56,"referencesCount":55,"weaknesses":62,"weaknessesCount":55,"isActivelyExploited":71,"cisaInfo":26,"otxData":26,"relatedBlogPosts":72,"seoMetadata":73,"configurations":98,"relatedVendorCves":107,"notableEvents":108},"CVE-2021-23894","What is CVE-2021-23894?","Deserialization of untrusted data vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows a remote unauthenticated attacker to create a reverse shell with administrator privileges on the DBSec server via carefully constructed Java serialized object sent to the DBSec server.","Deserialization of untrusted data vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows a remote unauthenticated attacker to create a rever...","2021-06-02T13:15:11.81","2023-11-15T18:47:26.743",8.8,"CVSS:3.1\u002FAV:A\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":38,"CVSSMetricV40":26},[16,29],{"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":25,"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,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":27,"ImpactScore":37},"trellixpsirt@trellix.com","Secondary",{"Version":20,"VectorString":33,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":34,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":35,"BaseSeverity":36,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":25,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"CVSS:3.1\u002FAV:A\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:C\u002FC:H\u002FI:H\u002FA:H","CHANGED",9.6,"CRITICAL",6,[39],{"Source":17,"Type":18,"CVSSData":40,"BaseSeverity":25,"ExploitabilityScore":45,"ImpactScore":45,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":41,"VectorString":42,"AccessVector":43,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":44,"IntegrityImpact":44,"AvailabilityImpact":44,"BaseScore":45,"BaseSeverity":26,"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:C\u002FI:C\u002FA:C","NETWORK","COMPLETE",10,0.02242,[46,46,46,46,46,46,46],"High",[50],{"vendor":51,"product":52,"version":53,"criteria":54,"vulnerable":4},"mcafee","database_security","*","cpe:2.3:a:mcafee:database_security:*:*:*:*:*:*:*:*",1,[57],{"url":58,"source":59,"tags":60},"https:\u002F\u002Fkc.mcafee.com\u002Fcorporate\u002Findex?page=content&id=SB10359","Mcafee",[61],"Broken Link",[63],{"id":64,"name":65,"description":66,"extendedDescription":67,"status":68,"abstraction":69,"structure":70},"CWE-502","Deserialization of Untrusted Data","The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.","It is often convenient to serialize objects for communication or to save them for later use. However, deserialized data or code can often be modified without using the provided accessor functions if it does not use cryptography to protect itself. Furthermore, any cryptography would still be client-side security -- which is a dangerous security assumption.\nData that is untrusted can not be trusted to be well-formed.\nWhen developers place no restrictions on \"gadget chains,\" or series of instances and method invocations that can self-execute during the deserialization process (i.e., before the object is returned to the caller), it is sometimes possible for attackers to leverage them to perform unauthorized actions, like generating a shell.","Draft","Base","Simple",false,[],{"title":74,"metaDescription":75,"keywords":76,"canonicalUrl":77,"structuredData":78},"What is CVE-2021-23894? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-23894, a high severity cyber security vulnerability from 2021. Deserialization of untrusted data vulnerability in McAfee D...","CVE-2021-23894, CVE-2021-23894 vulnerability, CVE-2021-23894 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, mcafee security, database_security vulnerability","\u002Fwhat-is\u002Fcve-2021-23894",{"@context":79,"@type":80,"headline":74,"description":75,"datePublished":10,"dateModified":11,"author":81,"publisher":85,"about":89,"mainEntityOfPage":93,"articleSection":96,"keywords":97},"https:\u002F\u002Fschema.org","TechArticle",{"@type":82,"name":83,"url":84},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":82,"name":83,"url":84,"logo":86},{"@type":87,"url":88},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":90,"name":6,"description":91,"additionalType":92},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":94,"@id":95},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-23894","Cybersecurity","CVE-2021-23894, CVE-2021-23894 vulnerability, CVE-2021-23894 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[99],{"Operator":26,"Negate":26,"Nodes":100},[101],{"Operator":102,"Negate":26,"CPEMatch":103},"OR",[104],{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":105,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":106,"VersionEndIncluding":26},"7587EA60-33A0-404E-8357-F057E06EA16B","4.8.2",[],[],{"lastModified":11,"cacheTime":110,"version":41},1792347468236,{"score":112,"band":113,"action":114,"scoredAt":115},54,"Medium","Plan remediation","2026-10-16T06:51:13.929297+00:00"]