{"affected":[{"affectedData":[{"product":"Chrome","vendor":"Google","versions":[{"lessThan":"89.0.4389.128","status":"affected","version":"unspecified","versionType":"custom"}]}],"source":"chrome-cve-admin@google.com"}],"cisaActionDue":"2021-11-17","cisaExploitAdd":"2021-11-03","cisaRequiredAction":"Apply updates per vendor instructions.","cisaVulnerabilityName":"Google Chromium Blink Use-After-Free Vulnerability","configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*","matchCriteriaId":"060C60A1-9A64-4B1D-A546-8397599DE453","versionEndExcluding":"89.0.4389.128","vulnerable":true}],"negate":false,"operator":"OR"}]},{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*","matchCriteriaId":"36D96259-24BD-44E2-96D9-78CE1D41F956","vulnerable":true},{"criteria":"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","matchCriteriaId":"E460AA51-FCDA-46B9-AE97-E6676AA5E194","vulnerable":true},{"criteria":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","matchCriteriaId":"A930E247-0B43-43CB-98FF-6CE7B8189835","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Use after free in Blink in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page."},{"lang":"es","value":"Un uso de la memoria previamente liberada en Blink en Google Chrome versiones anteriores a 89.0.4389.128, permitía a un atacante remoto explotar potencialmente una corrupción de la memoria por medio de una página HTML diseñada"}],"id":"CVE-2021-21206","lastModified":"2026-06-17T03:35:02.093","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":6.8,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":8.6,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":true}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":5.9,"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2021-21206","options":[{"exploitation":"active"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2025-02-04T15:02:34.675941Z","version":"2.0.3"}}]},"published":"2021-04-26T17:15:08.213","references":[{"source":"chrome-cve-admin@google.com","tags":["Release Notes"],"url":"https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html"},{"source":"chrome-cve-admin@google.com","tags":["Permissions Required","Third Party Advisory"],"url":"https://crbug.com/1196781"},{"source":"chrome-cve-admin@google.com","tags":["Release Notes"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/"},{"source":"chrome-cve-admin@google.com","tags":["Release Notes"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/"},{"source":"chrome-cve-admin@google.com","tags":["Release 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