[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fFji1TLHy5UsHsL711__73Fsn42QAZmRRHTfXBS9zt5w":3,"g5a-risk:CVE-2021-35395":126},{"success":4,"data":5,"meta":124},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":44,"epssPercentile":27,"epssTimeSeries":45,"severity":46,"affectedProducts":47,"affectedProductsCount":53,"references":54,"referencesCount":81,"weaknesses":82,"weaknessesCount":53,"isActivelyExploited":4,"cisaInfo":86,"otxData":27,"relatedBlogPosts":87,"seoMetadata":88,"configurations":113,"relatedVendorCves":122,"notableEvents":123},"CVE-2021-35395","What is CVE-2021-35395?","Realtek Jungle SDK version v2.x up to v3.4.14B provides an HTTP web server exposing a management interface that can be used to configure the access point. Two versions of this management interface exists: one based on Go-Ahead named webs and another based on Boa named boa. Both of them are affected by these vulnerabilities. Specifically, these binaries are vulnerable to the following issues: - stack buffer overflow in formRebootCheck due to unsafe copy of submit-url parameter - stack buffer overflow in formWsc due to unsafe copy of submit-url parameter - stack buffer overflow in formWlanMultipleAP due to unsafe copy of submit-url parameter - stack buffer overflow in formWlSiteSurvey due to unsafe copy of ifname parameter - stack buffer overflow in formStaticDHCP due to unsafe copy of hostname parameter - stack buffer overflow in formWsc due to unsafe copy of 'peerPin' parameter - arbitrary command execution in formSysCmd via the sysCmd parameter - arbitrary command injection in formWsc via the 'peerPin' parameter Exploitability of identified issues will differ based on what the end vendor\u002Fmanufacturer did with the Realtek SDK webserver. Some vendors use it as-is, others add their own authentication implementation, some kept all the features from the server, some remove some of them, some inserted their own set of features. However, given that Realtek SDK implementation is full of insecure calls and that developers tends to re-use those examples in their custom code, any binary based on Realtek SDK webserver will probably contains its own set of issues on top of the Realtek ones (if kept). Successful exploitation of these issues allows remote attackers to gain arbitrary code execution on the device.","Realtek Jungle SDK version v2.x up to v3.4.14B provides an HTTP web server exposing a management interface that can be used to configure the access point. Tw...","2021-08-16T12:15:07.3","2025-10-22T00:17:38.983",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":34,"CVSSMetricV2":35,"CVSSMetricV40":27},[16,30],{"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":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"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,3.9,5.9,{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":28,"ImpactScore":29},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},[],[36],{"Source":17,"Type":18,"CVSSData":37,"BaseSeverity":25,"ExploitabilityScore":41,"ImpactScore":41,"ACInsufInfo":43,"ObtainAllPrivilege":43,"ObtainUserPrivilege":43,"ObtainOtherPrivilege":43,"UserInteractionRequired":43},{"Version":38,"VectorString":39,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":40,"IntegrityImpact":40,"AvailabilityImpact":40,"BaseScore":41,"BaseSeverity":42,"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:C\u002FI:C\u002FA:C","COMPLETE",10,"",false,0.981,[44,44,44,44,44,44,44],"Critical",[48],{"vendor":49,"product":50,"version":51,"criteria":52,"vulnerable":4},"realtek","rtl819x_jungle_software_development_kit","*","cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:*:*:*:*:*:*:*:*",1,[55,62,68,71,73,75,77],{"url":56,"source":57,"tags":58},"https:\u002F\u002Fwww.iot-inspector.com\u002Fblog\u002Fadvisory-multiple-issues-realtek-sdk-iot-supply-chain","Iot-inspector",[59,60,61],"Broken Link","Exploit","Third Party Advisory",{"url":63,"source":64,"tags":65},"https:\u002F\u002Fwww.realtek.com\u002Fen\u002Fcu-1-en\u002Fcu-1-taiwan-en","Realtek",[59,66,67],"Patch","Vendor Advisory",{"url":69,"source":64,"tags":70},"https:\u002F\u002Fwww.realtek.com\u002Fimages\u002Fsafe-report\u002FRealtek_APRouter_SDK_Advisory-CVE-2021-35392_35395.pdf",[66],{"url":56,"source":57,"tags":72},[59,60,61],{"url":63,"source":64,"tags":74},[59,66,67],{"url":69,"source":64,"tags":76},[66],{"url":78,"source":79,"tags":80},"https:\u002F\u002Fwww.cisa.gov\u002Fknown-exploited-vulnerabilities-catalog?field_cve=CVE-2021-35395","CISA",[],7,[83],{"id":84,"name":84,"description":85},"Unknown","NVD-CWE-Other",{"shortDescription":42,"requiredAction":42,"vulnerabilityName":42,"dateAdded":27},[],{"title":89,"metaDescription":90,"keywords":91,"canonicalUrl":92,"structuredData":93},"What is CVE-2021-35395? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-35395, a critical severity cyber security vulnerability from 2021. High exploit probability (98.1%). Realtek Jungle SDK ve...","CVE-2021-35395, CVE-2021-35395 vulnerability, CVE-2021-35395 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, realtek security, rtl819x_jungle_software_development_kit vulnerability, high risk vulnerability, actively exploited, exploit available","\u002Fwhat-is\u002Fcve-2021-35395",{"@context":94,"@type":95,"headline":89,"description":90,"datePublished":10,"dateModified":11,"author":96,"publisher":100,"about":104,"mainEntityOfPage":108,"articleSection":111,"keywords":112},"https:\u002F\u002Fschema.org","TechArticle",{"@type":97,"name":98,"url":99},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":97,"name":98,"url":99,"logo":101},{"@type":102,"url":103},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":105,"name":6,"description":106,"additionalType":107},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":109,"@id":110},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-35395","Cybersecurity","CVE-2021-35395, CVE-2021-35395 vulnerability, CVE-2021-35395 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[114],{"Operator":27,"Negate":27,"Nodes":115},[116],{"Operator":117,"Negate":43,"CPEMatch":118},"OR",[119],{"Vulnerable":4,"Criteria":52,"MatchCriteriaID":120,"VersionStartExcluding":27,"VersionStartIncluding":38,"VersionEndExcluding":27,"VersionEndIncluding":121},"00E83926-7610-44FA-9837-B03D386A07D5","3.4.14b",[],[],{"lastModified":11,"cacheTime":125,"version":38},1792269633480,{"score":127,"band":46,"action":128,"scoredAt":129},87,"Emergency patch","2026-10-16T06:51:48.556108+00:00"]