[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f07DYOM7inP9cGnsT_p2sH1OBmlVC-xrvwLUmdN_UFz8":3,"g5a-risk:CVE-2021-42694":147},{"success":4,"data":5,"meta":145},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":43,"epssPercentile":26,"epssTimeSeries":44,"severity":45,"affectedProducts":46,"affectedProductsCount":51,"references":52,"referencesCount":97,"weaknesses":98,"weaknessesCount":51,"isActivelyExploited":107,"cisaInfo":26,"otxData":26,"relatedBlogPosts":108,"seoMetadata":109,"configurations":134,"relatedVendorCves":143,"notableEvents":144},"CVE-2021-42694","What is CVE-2021-42694?","An issue was discovered in the character definitions of the Unicode Specification through 14.0. The specification allows an adversary to produce source code identifiers such as function names using homoglyphs that render visually identical to a target identifier. Adversaries can leverage this to inject code via adversarial identifier definitions in upstream software dependencies invoked deceptively in downstream software. NOTE: the Unicode Consortium offers the following alternative approach to presenting this concern. An issue is noted in the nature of international text that can affect applications that implement support for The Unicode Standard (all versions). Unless mitigated, an adversary could produce source code identifiers using homoglyph characters that render visually identical to but are distinct from a target identifier. In this way, an adversary could inject adversarial identifier definitions in upstream software that are not detected by human reviewers and are invoked deceptively in downstream software. The Unicode Consortium has documented this class of security vulnerability in its document, Unicode Technical Report #36, Unicode Security Considerations. The Unicode Consortium also provides guidance on mitigations for this class of issues in Unicode Technical Standard #39, Unicode Security Mechanisms.","An issue was discovered in the character definitions of the Unicode Specification through 14.0. The specification allows an adversary to produce source code ...","2021-11-01T04:15:08.043","2024-10-29T14:35:08.773",8.3,"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:R\u002FS:C\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":33,"CVSSMetricV40":26},[16,29],{"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":24,"Scope":25,"ConfidentialityImpact":22,"IntegrityImpact":22,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":22,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":22,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","HIGH","NONE","REQUIRED","CHANGED",null,1.6,6,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":27,"ImpactScore":28},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":22,"IntegrityImpact":22,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":22,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":22,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},[34],{"Source":17,"Type":18,"CVSSData":35,"BaseSeverity":40,"ExploitabilityScore":41,"ImpactScore":42,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":4},{"Version":36,"VectorString":37,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":38,"IntegrityImpact":38,"AvailabilityImpact":38,"BaseScore":39,"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:H\u002FAu:N\u002FC:P\u002FI:P\u002FA:P","PARTIAL",5.1,"MEDIUM",4.9,6.4,0.0491,[43,43,43,43,43,43,43],"High",[47],{"vendor":48,"product":48,"version":49,"criteria":50,"vulnerable":4},"unicode","*","cpe:2.3:a:unicode:unicode:*:*:*:*:*:*:*:*",1,[53,59,62,68,72,76,80,85,90,94],{"url":54,"source":55,"tags":56},"http:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2021\u002F11\u002F01\u002F1","Openwall",[57,58],"Mailing List","Third Party Advisory",{"url":60,"source":55,"tags":61},"http:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2021\u002F11\u002F01\u002F6",[57,58],{"url":63,"source":64,"tags":65},"http:\u002F\u002Fwww.unicode.org\u002Fversions\u002FUnicode14.0.0\u002F","Unicode",[66,67],"Release Notes","Vendor Advisory",{"url":69,"source":70,"tags":71},"https:\u002F\u002Fcwe.mitre.org\u002Fdata\u002Fdefinitions\u002F1007.html","Mitre",[58],{"url":73,"source":74,"tags":75},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202210-09","Gentoo",[58],{"url":77,"source":78,"tags":79},"https:\u002F\u002Ftrojansource.codes","Trojansource",[58],{"url":81,"source":82,"tags":83},"https:\u002F\u002Fwww.kb.cert.org\u002Fvuls\u002Fid\u002F999008","Cert",[58,84],"US Government Resource",{"url":86,"source":87,"tags":88},"https:\u002F\u002Fwww.scyon.nl\u002Fpost\u002Ftrojans-in-your-source-code","Scyon",[89,58],"Exploit",{"url":91,"source":64,"tags":92},"https:\u002F\u002Fwww.unicode.org\u002Freports\u002Ftr36\u002F",[93,67],"Technical Description",{"url":95,"source":64,"tags":96},"https:\u002F\u002Fwww.unicode.org\u002Freports\u002Ftr39\u002F",[93,67],10,[99],{"id":100,"name":101,"description":102,"extendedDescription":103,"status":104,"abstraction":105,"structure":106},"CWE-94","Improper Control of Generation of Code ('Code Injection')","The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.","When a product allows a user's input to contain code syntax, it might be possible for an attacker to craft the code in such a way that it will alter the intended control flow of the product. Such an alteration could lead to arbitrary code execution.\nInjection problems encompass a wide variety of issues -- all mitigated in very different ways. For this reason, the most effective way to discuss these weaknesses is to note the distinct features which classify them as injection weaknesses. The most important issue to note is that all injection problems share one thing in common -- i.e., they allow for the injection of control plane data into the user-controlled data plane. This means that the execution of the process may be altered by sending code in through legitimate data channels, using no other mechanism. While buffer overflows, and many other flaws, involve the use of some further issue to gain execution, injection problems need only for the data to be parsed. The most classic instantiations of this category of weakness are SQL injection and format string vulnerabilities.","Draft","Base","Simple",false,[],{"title":110,"metaDescription":111,"keywords":112,"canonicalUrl":113,"structuredData":114},"What is CVE-2021-42694? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-42694, a high severity cyber security vulnerability from 2021. An issue was discovered in the character definitions of the...","CVE-2021-42694, CVE-2021-42694 vulnerability, CVE-2021-42694 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, unicode security, unicode vulnerability","\u002Fwhat-is\u002Fcve-2021-42694",{"@context":115,"@type":116,"headline":110,"description":111,"datePublished":10,"dateModified":11,"author":117,"publisher":121,"about":125,"mainEntityOfPage":129,"articleSection":132,"keywords":133},"https:\u002F\u002Fschema.org","TechArticle",{"@type":118,"name":119,"url":120},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":118,"name":119,"url":120,"logo":122},{"@type":123,"url":124},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":126,"name":6,"description":127,"additionalType":128},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":130,"@id":131},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-42694","Cybersecurity","CVE-2021-42694, CVE-2021-42694 vulnerability, CVE-2021-42694 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[135],{"Operator":26,"Negate":26,"Nodes":136},[137],{"Operator":138,"Negate":26,"CPEMatch":139},"OR",[140],{"Vulnerable":4,"Criteria":50,"MatchCriteriaID":141,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":142,"VersionEndIncluding":26},"FAB64729-AF3D-46C0-B3B9-1588B46C524A","14.0.0",[],[],{"lastModified":11,"cacheTime":146,"version":36},1792368538686,{"score":148,"band":149,"action":150,"scoredAt":151},50,"Medium","Plan remediation","2026-10-16T06:52:22.88686+00:00"]