[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fvOF4JQMTnlFYXARYQxewumsxse_jPe5uennUqXtew70":3,"g5a-risk:CVE-2021-20040":212},{"success":4,"data":5,"meta":210},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":41,"affectedProducts":42,"affectedProductsCount":87,"references":88,"referencesCount":94,"weaknesses":95,"weaknessesCount":110,"isActivelyExploited":111,"cisaInfo":26,"otxData":26,"relatedBlogPosts":112,"seoMetadata":113,"configurations":138,"relatedVendorCves":201,"notableEvents":202},"CVE-2021-20040","What is CVE-2021-20040?","A relative path traversal vulnerability in the SMA100 upload funtion allows a remote unauthenticated attacker to upload crafted web pages or files as a 'nobody' user. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.","A relative path traversal vulnerability in the SMA100 upload funtion allows a remote unauthenticated attacker to upload crafted web pages or files as a 'nobo...","2021-12-08T10:15:07.953","2021-12-10T22:11:11.603",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:H\u002FA:N",{"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":25,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":23,"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":34,"AvailabilityImpact":23,"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:P\u002FA:N","PARTIAL",5,"MEDIUM",10,2.9,0.2515,[39,39,39,39,39,39,39],"High",[43,48,51,55,58,60,63,66,68,71,74,76,79,82,84],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"sonicwall","sma_200_firmware","10.2.0.8-37sv","cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",{"vendor":44,"product":45,"version":49,"criteria":50,"vulnerable":4},"10.2.1.1-19sv","cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",{"vendor":44,"product":52,"version":53,"criteria":54,"vulnerable":4},"sma_200","-","cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*",{"vendor":44,"product":56,"version":46,"criteria":57,"vulnerable":4},"sma_210_firmware","cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",{"vendor":44,"product":56,"version":49,"criteria":59,"vulnerable":4},"cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",{"vendor":44,"product":61,"version":53,"criteria":62,"vulnerable":4},"sma_210","cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*",{"vendor":44,"product":64,"version":46,"criteria":65,"vulnerable":4},"sma_410_firmware","cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",{"vendor":44,"product":64,"version":49,"criteria":67,"vulnerable":4},"cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",{"vendor":44,"product":69,"version":53,"criteria":70,"vulnerable":4},"sma_410","cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*",{"vendor":44,"product":72,"version":46,"criteria":73,"vulnerable":4},"sma_400_firmware","cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",{"vendor":44,"product":72,"version":49,"criteria":75,"vulnerable":4},"cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",{"vendor":44,"product":77,"version":53,"criteria":78,"vulnerable":4},"sma_400","cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*",{"vendor":44,"product":80,"version":46,"criteria":81,"vulnerable":4},"sma_500v_firmware","cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",{"vendor":44,"product":80,"version":49,"criteria":83,"vulnerable":4},"cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",{"vendor":44,"product":85,"version":53,"criteria":86,"vulnerable":4},"sma_500v","cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:*",15,[89],{"url":90,"source":91,"tags":92},"https:\u002F\u002Fpsirt.global.sonicwall.com\u002Fvuln-detail\u002FSNWLID-2021-0026","Sonicwall",[93],"Vendor Advisory",1,[96,104],{"id":97,"name":98,"description":99,"extendedDescription":100,"status":101,"abstraction":102,"structure":103},"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":105,"name":106,"description":107,"extendedDescription":108,"status":109,"abstraction":102,"structure":103},"CWE-23","Relative Path Traversal","The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as \"..\" that can resolve to a location that is outside of that directory.","This allows attackers to traverse the file system to access files or directories that are outside of the restricted directory.","Draft",2,false,[],{"title":114,"metaDescription":115,"keywords":116,"canonicalUrl":117,"structuredData":118},"What is CVE-2021-20040? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-20040, a high severity cyber security vulnerability from 2021. A relative path traversal vulnerability in the SMA100 uploa...","CVE-2021-20040, CVE-2021-20040 vulnerability, CVE-2021-20040 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, sonicwall security, sma_200_firmware vulnerability, sma_200 vulnerability, sma_210_firmware vulnerability, sma_210 vulnerability, sma_410_firmware vulnerability","\u002Fwhat-is\u002Fcve-2021-20040",{"@context":119,"@type":120,"headline":114,"description":115,"datePublished":10,"dateModified":11,"author":121,"publisher":125,"about":129,"mainEntityOfPage":133,"articleSection":136,"keywords":137},"https:\u002F\u002Fschema.org","TechArticle",{"@type":122,"name":123,"url":124},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":122,"name":123,"url":124,"logo":126},{"@type":127,"url":128},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":130,"name":6,"description":131,"additionalType":132},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":134,"@id":135},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-20040","Cybersecurity","CVE-2021-20040, CVE-2021-20040 vulnerability, CVE-2021-20040 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[139,153,165,177,189],{"Operator":140,"Negate":26,"Nodes":141},"AND",[142,149],{"Operator":143,"Negate":26,"CPEMatch":144},"OR",[145,147],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":146,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"4185C028-6A07-4A92-8380-9AA3953D2CFD",{"Vulnerable":4,"Criteria":50,"MatchCriteriaID":148,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"33233A45-6667-4CE9-A21C-6A6C725689F8",{"Operator":143,"Negate":26,"CPEMatch":150},[151],{"Vulnerable":26,"Criteria":54,"MatchCriteriaID":152,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"0B190266-AD6F-401B-9B2E-061CDD539236",{"Operator":140,"Negate":26,"Nodes":154},[155,161],{"Operator":143,"Negate":26,"CPEMatch":156},[157,159],{"Vulnerable":4,"Criteria":57,"MatchCriteriaID":158,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"E62EEC93-6F52-4DDB-95F0-D5736391D64C",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":160,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"E4F1C135-A182-4233-B7FC-D08C754ECE13",{"Operator":143,"Negate":26,"CPEMatch":162},[163],{"Vulnerable":26,"Criteria":62,"MatchCriteriaID":164,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"51587338-4A5F-41FC-9497-743F061947C2",{"Operator":140,"Negate":26,"Nodes":166},[167,173],{"Operator":143,"Negate":26,"CPEMatch":168},[169,171],{"Vulnerable":4,"Criteria":65,"MatchCriteriaID":170,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"53698BD3-43B6-4EC4-8847-E6ED9A3CB6F6",{"Vulnerable":4,"Criteria":67,"MatchCriteriaID":172,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"8EC74D70-C04B-481F-A706-6C86751996FB",{"Operator":143,"Negate":26,"CPEMatch":174},[175],{"Vulnerable":26,"Criteria":70,"MatchCriteriaID":176,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"9DFB8FBC-FFA4-4526-B306-D5692A43DC9E",{"Operator":140,"Negate":26,"Nodes":178},[179,185],{"Operator":143,"Negate":26,"CPEMatch":180},[181,183],{"Vulnerable":4,"Criteria":73,"MatchCriteriaID":182,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"9BE21589-3BEC-4245-9939-CF50DE70B12A",{"Vulnerable":4,"Criteria":75,"MatchCriteriaID":184,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"BEB82F42-A5DF-42CC-86F9-B06B39BBC202",{"Operator":143,"Negate":26,"CPEMatch":186},[187],{"Vulnerable":26,"Criteria":78,"MatchCriteriaID":188,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"9D728332-10C9-4508-B720-569D44E99543",{"Operator":140,"Negate":26,"Nodes":190},[191,197],{"Operator":143,"Negate":26,"CPEMatch":192},[193,195],{"Vulnerable":4,"Criteria":81,"MatchCriteriaID":194,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"379F7CA2-8914-4710-AE6B-D2833605D4B8",{"Vulnerable":4,"Criteria":83,"MatchCriteriaID":196,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"AC429F62-366B-4B68-B378-FB741F9F7FEF",{"Operator":143,"Negate":26,"CPEMatch":198},[199],{"Vulnerable":26,"Criteria":86,"MatchCriteriaID":200,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"A6AD8A33-7CE4-4C66-9E23-F0C9C9638770",[],[203],{"id":204,"eventType":205,"eventTime":206,"details":207,"label":208,"color":209},"82e216ca-6203-4305-acf3-82fe1e6f23ec","HIGH_EPSS_DELTA","2026-06-16T04:05:44.770565+00:00","Daily EPSS score increased by 0.202 on 2023-12-30","EPSS Score Increased","red",{"lastModified":11,"cacheTime":211,"version":32},1792240676922,{"score":213,"band":214,"action":215,"scoredAt":216},42,"Medium","Plan remediation","2026-10-16T06:52:38.462085+00:00"]