[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fPhDiPwqM-i3lwkbLBoJae9Cgq_pWUo01ySUc3JfUh14":3,"g5a-risk:CVE-2018-20251":141},{"success":4,"data":5,"meta":139},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":41,"epssPercentile":15,"epssTimeSeries":42,"severity":43,"affectedProducts":44,"affectedProductsCount":50,"references":51,"referencesCount":69,"weaknesses":70,"weaknessesCount":86,"isActivelyExploited":87,"cisaInfo":15,"otxData":15,"relatedBlogPosts":88,"seoMetadata":89,"configurations":114,"relatedVendorCves":123,"notableEvents":124},"CVE-2018-20251","What is CVE-2018-20251?","In WinRAR versions prior to and including 5.61, there is path traversal vulnerability when crafting the filename field of the ACE format. The UNACE module (UNACEV2.dll) creates files and folders as written in the filename field even when WinRAR validator noticed the traversal attempt and requestd to abort the extraction process. the operation is cancelled only after the folders and files were created but prior to them being written, therefore allowing the attacker to create empty files and folders everywhere in the file system.","In WinRAR versions prior to and including 5.61, there is path traversal vulnerability when crafting the filename field of the ACE format. The UNACE module (U...","2019-02-05T20:29:00.273","2019-10-09T23:39:36.197",5.5,"CVSS:3.0\u002FAV:L\u002FAC:L\u002FPR:N\u002FUI:R\u002FS:U\u002FC:N\u002FI:H\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":16,"CVSSMetricV2":31,"CVSSMetricV40":15},null,[17],{"Source":18,"Type":19,"CVSSData":20,"ExploitabilityScore":29,"ImpactScore":30},"nvd@nist.gov","Primary",{"Version":21,"VectorString":13,"AttackVector":22,"AttackComplexity":23,"PrivilegesRequired":24,"UserInteraction":25,"Scope":26,"ConfidentialityImpact":24,"IntegrityImpact":27,"AvailabilityImpact":24,"BaseScore":12,"BaseSeverity":28,"ExploitCodeMaturity":15,"RemediationLevel":15,"ReportConfidence":15,"TemporalScore":15,"TemporalSeverity":15,"ConfidentialityRequirement":15,"IntegrityRequirement":15,"AvailabilityRequirement":15,"ModifiedAttackVector":15,"ModifiedAttackComplexity":15,"ModifiedPrivilegesRequired":15,"ModifiedUserInteraction":15,"ModifiedScope":15,"ModifiedConfidentialityImpact":15,"ModifiedIntegrityImpact":15,"ModifiedAvailabilityImpact":15,"EnvironmentalScore":15,"EnvironmentalSeverity":15},"3.0","LOCAL","LOW","NONE","REQUIRED","UNCHANGED","HIGH","MEDIUM",1.8,3.6,[32],{"Source":18,"Type":19,"CVSSData":33,"BaseSeverity":28,"ExploitabilityScore":39,"ImpactScore":40,"ACInsufInfo":15,"ObtainAllPrivilege":15,"ObtainUserPrivilege":15,"ObtainOtherPrivilege":15,"UserInteractionRequired":4},{"Version":34,"VectorString":35,"AccessVector":36,"AccessComplexity":28,"Authentication":24,"ConfidentialityImpact":24,"IntegrityImpact":37,"AvailabilityImpact":24,"BaseScore":38,"BaseSeverity":15,"Exploitability":15,"RemediationLevel":15,"ReportConfidence":15,"TemporalScore":15,"CollateralDamagePotential":15,"TargetDistribution":15,"ConfidentialityRequirement":15,"IntegrityRequirement":15,"AvailabilityRequirement":15,"EnvironmentalScore":15},"2.0","AV:N\u002FAC:M\u002FAu:N\u002FC:N\u002FI:P\u002FA:N","NETWORK","PARTIAL",4.3,8.6,2.9,0.31404,[41,41,41,41,41,41,41],"Medium",[45],{"vendor":46,"product":47,"version":48,"criteria":49,"vulnerable":4},"rarlab","winrar","*","cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:*",1,[52,58,63],{"url":53,"source":54,"tags":55},"http:\u002F\u002Fwww.securityfocus.com\u002Fbid\u002F106948","Securityfocus",[56,57],"VDB Entry","Third Party Advisory",{"url":59,"source":60,"tags":61},"https:\u002F\u002Fresearch.checkpoint.com\u002Fextracting-code-execution-from-winrar\u002F","Checkpoint",[62,57],"Exploit",{"url":64,"source":65,"tags":66},"https:\u002F\u002Fwww.win-rar.com\u002Fwhatsnew.html","Win-rar",[67,68],"Release Notes","Vendor Advisory",3,[71,79],{"id":72,"name":73,"description":74,"extendedDescription":75,"status":76,"abstraction":77,"structure":78},"CWE-22","Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","Many file operations are intended to take place within a restricted directory. By using special elements such as \"..\" and \"\u002F\" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the \"..\u002F\" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as \"\u002Fusr\u002Flocal\u002Fbin\" to access unexpected files. This is referred to as absolute path traversal.","Stable","Base","Simple",{"id":80,"name":81,"description":82,"extendedDescription":83,"status":84,"abstraction":85,"structure":78},"CWE-693","Protection Mechanism Failure","The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.","This weakness covers three distinct situations. A \"missing\" protection mechanism occurs when the application does not define any mechanism against a certain class of attack. An \"insufficient\" protection mechanism might provide some defenses - for example, against the most common attacks - but it does not protect against everything that is intended. Finally, an \"ignored\" mechanism occurs when a mechanism is available and in active use within the product, but the developer has not applied it in some code path.","Draft","Pillar",2,false,[],{"title":90,"metaDescription":91,"keywords":92,"canonicalUrl":93,"structuredData":94},"What is CVE-2018-20251? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2018-20251, a medium severity cyber security vulnerability from 2019. High exploit probability (31.4%). In WinRAR versions prio...","CVE-2018-20251, CVE-2018-20251 vulnerability, CVE-2018-20251 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2019, CVSS score, exploit, patch, remediation, rarlab security, winrar vulnerability, high risk vulnerability, actively exploited, exploit available","\u002Fwhat-is\u002Fcve-2018-20251",{"@context":95,"@type":96,"headline":90,"description":91,"datePublished":10,"dateModified":11,"author":97,"publisher":101,"about":105,"mainEntityOfPage":109,"articleSection":112,"keywords":113},"https:\u002F\u002Fschema.org","TechArticle",{"@type":98,"name":99,"url":100},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":98,"name":99,"url":100,"logo":102},{"@type":103,"url":104},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":106,"name":6,"description":107,"additionalType":108},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":110,"@id":111},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2018-20251","Cybersecurity","CVE-2018-20251, CVE-2018-20251 vulnerability, CVE-2018-20251 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[115],{"Operator":15,"Negate":15,"Nodes":116},[117],{"Operator":118,"Negate":15,"CPEMatch":119},"OR",[120],{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":121,"VersionStartExcluding":15,"VersionStartIncluding":15,"VersionEndExcluding":15,"VersionEndIncluding":122},"7EA0C7CE-99E6-4C92-AE89-6C6A8DF92126","5.61",[],[125,132],{"id":126,"eventType":127,"eventTime":128,"details":129,"label":130,"color":131},"346551f6-40c4-4787-826c-5f9b749fadea","HIGH_EPSS_DELTA","2026-06-16T04:06:13.224699+00:00","Daily EPSS score increased by 0.309 on 2023-12-30","EPSS Score Increased","red",{"id":133,"eventType":134,"eventTime":135,"details":136,"label":137,"color":138},"75693479-c042-4a17-93a6-caa54b4c2e2b","LOW_EPSS_DELTA","2026-08-24T04:06:43.218113+00:00","Daily EPSS score decreased by 0.253 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":140,"version":34},1792377092721,{"score":142,"band":43,"action":143,"scoredAt":144},41,"Plan remediation","2026-10-16T06:45:32.264381+00:00"]