[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fU5PwJmE8_PIyysW-FfD4S-UgwrFUv4hBbrVuBYi6YPk":3,"g5a-risk:CVE-2021-20034":224},{"success":4,"data":5,"meta":222},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":40,"epssPercentile":27,"epssTimeSeries":41,"severity":42,"affectedProducts":43,"affectedProductsCount":74,"references":75,"referencesCount":88,"weaknesses":89,"weaknessesCount":88,"isActivelyExploited":105,"cisaInfo":27,"otxData":27,"relatedBlogPosts":106,"seoMetadata":107,"configurations":132,"relatedVendorCves":206,"notableEvents":207},"CVE-2021-20034","What is CVE-2021-20034?","An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.","An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file ...","2021-09-27T18:15:08.327","2022-07-08T18:21:10.883",9.1,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":30,"CVSSMetricV40":27},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":28,"ImpactScore":29},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH","CRITICAL",null,3.9,5.2,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":37,"ExploitabilityScore":38,"ImpactScore":39,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":35,"AvailabilityImpact":35,"BaseScore":36,"BaseSeverity":27,"Exploitability":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"CollateralDamagePotential":27,"TargetDistribution":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"EnvironmentalScore":27},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:N\u002FI:P\u002FA:P","PARTIAL",6.4,"MEDIUM",10,4.9,0.81007,[40,40,40,40,40,40,40],"Critical",[44,49,53,56,59,62,65,68,71],{"vendor":45,"product":46,"version":47,"criteria":48,"vulnerable":4},"sonicwall","sma_200_firmware","*","cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*",{"vendor":45,"product":50,"version":51,"criteria":52,"vulnerable":4},"sma_200","-","cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*",{"vendor":45,"product":54,"version":47,"criteria":55,"vulnerable":4},"sma_210_firmware","cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*",{"vendor":45,"product":57,"version":51,"criteria":58,"vulnerable":4},"sma_210","cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*",{"vendor":45,"product":60,"version":47,"criteria":61,"vulnerable":4},"sma_400_firmware","cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*",{"vendor":45,"product":63,"version":51,"criteria":64,"vulnerable":4},"sma_400","cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*",{"vendor":45,"product":66,"version":47,"criteria":67,"vulnerable":4},"sma_410_firmware","cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*",{"vendor":45,"product":69,"version":51,"criteria":70,"vulnerable":4},"sma_410","cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*",{"vendor":45,"product":72,"version":47,"criteria":73,"vulnerable":4},"sma_500v","cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*",9,[76,83],{"url":77,"source":78,"tags":79},"http:\u002F\u002Fpacketstormsecurity.com\u002Ffiles\u002F164564\u002FSonicWall-SMA-10.2.1.0-17sv-Password-Reset.html","Packetstormsecurity",[80,81,82],"Exploit","Third Party Advisory","VDB Entry",{"url":84,"source":85,"tags":86},"https:\u002F\u002Fpsirt.global.sonicwall.com\u002Fvuln-detail\u002FSNWLID-2021-0021","Sonicwall",[87],"Vendor Advisory",2,[90,98],{"id":91,"name":92,"description":93,"extendedDescription":94,"status":95,"abstraction":96,"structure":97},"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":99,"name":100,"description":101,"extendedDescription":102,"status":103,"abstraction":104,"structure":97},"CWE-284","Improper Access Control","The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.","Access control involves the use of several protection mechanisms such as:\nWhen any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc.\nThere are two distinct behaviors that can introduce access control weaknesses:","Incomplete","Pillar",false,[],{"title":108,"metaDescription":109,"keywords":110,"canonicalUrl":111,"structuredData":112},"What is CVE-2021-20034? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-20034, a critical severity cyber security vulnerability from 2021. High exploit probability (81.0%). An improper access co...","CVE-2021-20034, CVE-2021-20034 vulnerability, CVE-2021-20034 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, sonicwall security, sma_200_firmware vulnerability, sma_200 vulnerability, sma_210_firmware vulnerability, sma_210 vulnerability, sma_400_firmware vulnerability, high risk vulnerability, actively exploited","\u002Fwhat-is\u002Fcve-2021-20034",{"@context":113,"@type":114,"headline":108,"description":109,"datePublished":10,"dateModified":11,"author":115,"publisher":119,"about":123,"mainEntityOfPage":127,"articleSection":130,"keywords":131},"https:\u002F\u002Fschema.org","TechArticle",{"@type":116,"name":117,"url":118},"Organization","Precursor 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EPSS score increased by 0.524 on 2023-12-30","EPSS Score Increased","red",{"id":216,"eventType":217,"eventTime":218,"details":219,"label":220,"color":221},"37521e1d-fd20-41bb-869f-75b8c11a418f","LOW_EPSS_DELTA","2025-11-22T04:05:56.68754+00:00","Daily EPSS score decreased by 0.524 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":223,"version":33},1792240631433,{"score":225,"band":226,"action":227,"scoredAt":228},67,"Medium","Plan remediation","2026-10-16T06:52:09.04354+00:00"]