[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f8qgHidIa-Wxqrh6D-hPS0CNagTcoZBTe0uspEmEhOUU":3,"g5a-risk:CVE-2021-27212":174},{"success":4,"data":5,"meta":172},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":26,"epssTimeSeries":40,"severity":42,"affectedProducts":43,"affectedProductsCount":35,"references":62,"referencesCount":97,"weaknesses":98,"weaknessesCount":107,"isActivelyExploited":108,"cisaInfo":26,"otxData":26,"relatedBlogPosts":109,"seoMetadata":110,"configurations":135,"relatedVendorCves":156,"notableEvents":157},"CVE-2021-27212","What is CVE-2021-27212?","In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.","In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packe...","2021-02-14T03:15:12.957","2023-11-07T03:31:55.75",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":29,"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":23,"IntegrityImpact":23,"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","NETWORK","LOW","NONE","UNCHANGED","HIGH",null,3.9,3.6,[30],{"Source":17,"Type":18,"CVSSData":31,"BaseSeverity":36,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":32,"VectorString":33,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":34,"BaseScore":35,"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:N\u002FI:N\u002FA:P","PARTIAL",5,"MEDIUM",10,2.9,0.66114,[41,41,41,41,39,39,39],0.63321,"High",[44,48,51,54,59],{"vendor":45,"product":45,"version":46,"criteria":47,"vulnerable":4},"openldap","*","cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*",{"vendor":45,"product":45,"version":49,"criteria":50,"vulnerable":4},"2.5.0","cpe:2.3:a:openldap:openldap:2.5.0:alpha:*:*:*:*:*:*",{"vendor":45,"product":45,"version":52,"criteria":53,"vulnerable":4},"2.5.1","cpe:2.3:a:openldap:openldap:2.5.1:alpha:*:*:*:*:*:*",{"vendor":55,"product":56,"version":57,"criteria":58,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":55,"product":56,"version":60,"criteria":61,"vulnerable":4},"10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",[63,70,74,77,81,84,90,94],{"url":64,"source":65,"tags":66},"https:\u002F\u002Fbugs.openldap.org\u002Fshow_bug.cgi?id=9454","Openldap",[67,68,69],"Exploit","Issue Tracking","Vendor Advisory",{"url":71,"source":65,"tags":72},"https:\u002F\u002Fgit.openldap.org\u002Fopenldap\u002Fopenldap\u002F-\u002Fcommit\u002F3539fc33212b528c56b716584f2c2994af7c30b0",[73,69],"Patch",{"url":75,"source":65,"tags":76},"https:\u002F\u002Fgit.openldap.org\u002Fopenldap\u002Fopenldap\u002F-\u002Fcommit\u002F9badb73425a67768c09bcaed1a9c26c684af6c30",[73,69],{"url":78,"source":79,"tags":80},"https:\u002F\u002Flists.apache.org\u002Fthread.html\u002Fr58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","Apache",[],{"url":82,"source":79,"tags":83},"https:\u002F\u002Flists.apache.org\u002Fthread.html\u002Frf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E",[],{"url":85,"source":86,"tags":87},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2021\u002F02\u002Fmsg00035.html","Debian",[88,89],"Mailing List","Third Party Advisory",{"url":91,"source":92,"tags":93},"https:\u002F\u002Fsecurity.netapp.com\u002Fadvisory\u002Fntap-20210319-0005\u002F","Netapp",[89],{"url":95,"source":86,"tags":96},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2021\u002Fdsa-4860",[89],8,[99],{"id":100,"name":101,"description":102,"extendedDescription":103,"status":104,"abstraction":105,"structure":106},"CWE-617","Reachable Assertion","The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.","While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service.\nFor example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.","Draft","Base","Simple",1,false,[],{"title":111,"metaDescription":112,"keywords":113,"canonicalUrl":114,"structuredData":115},"What is CVE-2021-27212? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-27212, a high severity cyber security vulnerability from 2021. High exploit probability (66.1%). In OpenLDAP through 2.4.5...","CVE-2021-27212, CVE-2021-27212 vulnerability, CVE-2021-27212 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, openldap security, debian security, openldap vulnerability, debian_linux vulnerability, high risk vulnerability, actively exploited, exploit available","\u002Fwhat-is\u002Fcve-2021-27212",{"@context":116,"@type":117,"headline":111,"description":112,"datePublished":10,"dateModified":11,"author":118,"publisher":122,"about":126,"mainEntityOfPage":130,"articleSection":133,"keywords":134},"https:\u002F\u002Fschema.org","TechArticle",{"@type":119,"name":120,"url":121},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":119,"name":120,"url":121,"logo":123},{"@type":124,"url":125},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":127,"name":6,"description":128,"additionalType":129},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":131,"@id":132},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-27212","Cybersecurity","CVE-2021-27212, CVE-2021-27212 vulnerability, CVE-2021-27212 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[136,148],{"Operator":26,"Negate":26,"Nodes":137},[138],{"Operator":139,"Negate":26,"CPEMatch":140},"OR",[141,144,146],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":142,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":143},"516467D7-7498-4C65-B2C3-C36F5591749E","2.4.57",{"Vulnerable":4,"Criteria":50,"MatchCriteriaID":145,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"40E051DB-A915-45D6-AB96-149FC5FFAF7B",{"Vulnerable":4,"Criteria":53,"MatchCriteriaID":147,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"B5FC4896-931B-4B04-9401-7A85F3F0CE8C",{"Operator":26,"Negate":26,"Nodes":149},[150],{"Operator":139,"Negate":26,"CPEMatch":151},[152,154],{"Vulnerable":4,"Criteria":58,"MatchCriteriaID":153,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Vulnerable":4,"Criteria":61,"MatchCriteriaID":155,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",[],[158,165],{"id":159,"eventType":160,"eventTime":161,"details":162,"label":163,"color":164},"ff4df04e-7a93-400f-b57f-31f905a64f79","HIGH_EPSS_DELTA","2025-11-19T04:06:04.101425+00:00","Daily EPSS score increased by 0.469 on 2023-12-30","EPSS Score Increased","red",{"id":166,"eventType":167,"eventTime":168,"details":169,"label":170,"color":171},"944a2633-76ec-4dd4-92e4-ba94edff393d","LOW_EPSS_DELTA","2025-11-22T04:05:51.698048+00:00","Daily EPSS score decreased by 0.469 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":173,"version":32},1792347483342,{"score":175,"band":176,"action":177,"scoredAt":178},56,"Medium","Plan remediation","2026-10-16T06:50:31.148319+00:00"]