[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f3ajxio_WlvZ5Q2g2P036tGnNO9CBUTK5RAMGYZAZxOU":3,"g5a-risk:CVE-2021-25830":118},{"success":4,"data":5,"meta":116},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":27,"epssTimeSeries":40,"severity":41,"affectedProducts":42,"affectedProductsCount":48,"references":49,"referencesCount":72,"weaknesses":73,"weaknessesCount":48,"isActivelyExploited":77,"cisaInfo":27,"otxData":27,"relatedBlogPosts":78,"seoMetadata":79,"configurations":104,"relatedVendorCves":114,"notableEvents":115},"CVE-2021-25830","What is CVE-2021-25830?","A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.2.0.236-v5.6.4.13. An attacker must request the conversion of the crafted file from DOCT into DOCX format. Using the chain of two other bugs related to improper string handling, an attacker can achieve remote code execution on DocumentServer.","A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.2.0.236-v5.6.4.13. An attacker must request the conversion of the ...","2021-03-01T16:15:14.293","2021-03-15T19:53:02.18",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\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":25,"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,3.9,5.9,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":25,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":35,"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:P\u002FI:P\u002FA:P","PARTIAL",7.5,10,6.4,0.11763,[39,39,39,39,39,39,39],"Critical",[43],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"onlyoffice","document_server","*","cpe:2.3:a:onlyoffice:document_server:*:*:*:*:*:*:*:*",1,[50,55,58,62,65,68],{"url":51,"source":52,"tags":53},"https:\u002F\u002Fgithub.com\u002FONLYOFFICE\u002FDocumentServer","GitHub",[54],"Product",{"url":56,"source":52,"tags":57},"https:\u002F\u002Fgithub.com\u002FONLYOFFICE\u002Fcore",[54],{"url":59,"source":52,"tags":60},"https:\u002F\u002Fgithub.com\u002FONLYOFFICE\u002Fcore\u002Fblob\u002Fv5.6.4.13\u002FASCOfficePPTXFile\u002FEditor\u002FBinaryFileReaderWriter.cpp#L1918",[61],"Third Party Advisory",{"url":63,"source":52,"tags":64},"https:\u002F\u002Fgithub.com\u002FONLYOFFICE\u002Fcore\u002Fblob\u002Fv5.6.4.13\u002FASCOfficePPTXFile\u002FEditor\u002FBinaryFileReaderWriter.cpp#L241",[61],{"url":66,"source":52,"tags":67},"https:\u002F\u002Fgithub.com\u002FONLYOFFICE\u002Fcore\u002Fblob\u002Fv5.6.4.13\u002FASCOfficePPTXFile\u002FPPTXFormat\u002FLogic\u002FUniFill.cpp#L343",[61],{"url":69,"source":52,"tags":70},"https:\u002F\u002Fgithub.com\u002Fmerrychap\u002Fpoc_exploits\u002Ftree\u002Fmaster\u002FONLYOFFICE\u002FCVE-2021-25830",[71,61],"Exploit",6,[74],{"id":75,"name":75,"description":76},"Unknown","NVD-CWE-noinfo",false,[],{"title":80,"metaDescription":81,"keywords":82,"canonicalUrl":83,"structuredData":84},"What is CVE-2021-25830? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-25830, a critical severity cyber security vulnerability from 2021. A file extension handling issue was found in [core] mod...","CVE-2021-25830, CVE-2021-25830 vulnerability, CVE-2021-25830 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, onlyoffice security, document_server vulnerability","\u002Fwhat-is\u002Fcve-2021-25830",{"@context":85,"@type":86,"headline":80,"description":81,"datePublished":10,"dateModified":11,"author":87,"publisher":91,"about":95,"mainEntityOfPage":99,"articleSection":102,"keywords":103},"https:\u002F\u002Fschema.org","TechArticle",{"@type":88,"name":89,"url":90},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":88,"name":89,"url":90,"logo":92},{"@type":93,"url":94},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":96,"name":6,"description":97,"additionalType":98},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":100,"@id":101},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-25830","Cybersecurity","CVE-2021-25830, CVE-2021-25830 vulnerability, CVE-2021-25830 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[105],{"Operator":27,"Negate":27,"Nodes":106},[107],{"Operator":108,"Negate":27,"CPEMatch":109},"OR",[110],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":111,"VersionStartExcluding":27,"VersionStartIncluding":112,"VersionEndExcluding":27,"VersionEndIncluding":113},"6B7DFCC7-0208-4A3F-8D64-96188179A17F","4.2.0.236","5.6.4.13",[],[],{"lastModified":11,"cacheTime":117,"version":33},1792326719550,{"score":119,"band":120,"action":121,"scoredAt":122},61,"Medium","Plan remediation","2026-10-16T06:50:35.047719+00:00"]