{"schemaVersion":3,"id":"CVE-2021-37975","aliases":["UBUNTU-CVE-2021-37975","DEBIAN-CVE-2021-37975"],"status":"published","duplicateOf":null,"title":"Google Chromium V8 Use-After-Free Vulnerability","description":"Use after free in V8 in Google Chrome prior to 94.0.4606.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.","dates":{"published":"2021-10-08T00:00:00.000Z","modified":"2025-10-21T23:25:29.815Z","reserved":null,"kevAdded":["2021-11-03T00:00:00.000Z"],"kevDue":["2021-11-17T00:00:00.000Z"]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.8,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.34887,"percentile":0.98423,"severity":"high","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.34887},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.34887,"percentile":0.98423}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.34887,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.34887,"percentile":0.98423}]},"kev":{"state":"listed","entries":[{"source":"cisa","sourceLabel":"CISA","dateAdded":"2021-11-03T00:00:00.000Z","dueDate":"2021-11-17T00:00:00.000Z","requiredAction":"Apply updates per vendor instructions.","name":"Google Chromium V8 Use-After-Free Vulnerability","description":"Google Chromium V8 Engine contains a use-after-free vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.","notes":[{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2021-37975","label":"nvd.nist.gov/vuln/detail/CVE-2021-37975"}],"vendor":"Google","product":"Chromium V8","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}],"listedCount":1,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":true,"entry":{"source":"cisa","sourceLabel":"CISA","dateAdded":"2021-11-03T00:00:00.000Z","dueDate":"2021-11-17T00:00:00.000Z","requiredAction":"Apply updates per vendor instructions.","name":"Google Chromium V8 Use-After-Free Vulnerability","description":"Google Chromium V8 Engine contains a use-after-free vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.","notes":[{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2021-37975","label":"nvd.nist.gov/vuln/detail/CVE-2021-37975"}],"vendor":"Google","product":"Chromium V8","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-416","name":"Use After Free","description":"The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"debian","product":"chromium","name":"chromium","label":"chromium","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/chromium","purlType":"deb","versions":[{"text":"< 97.0.4692.71-0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 97.0.4692.71-0.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"chromium-browser","name":"chromium-browser","label":"chromium-browser","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/chromium-browser","purlType":"deb","versions":[{"text":"< 94.0.4606.71-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 94.0.4606.71-0ubuntu0.18.04.1","eol":null,"hubHref":null},{"vendor":"debian","product":"debian_linux","name":"debian linux","label":"debian_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"10.0","noFixRecorded":false,"fixedIn":null},{"text":"11.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"10.0 | 11.0","eol":{"isEol":true,"eolDate":"2024-06-30T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"10","label":"10 (Buster)","eolFrom":"2024-06-30T00:00:00.000Z","isLts":false,"isMaintained":true,"latestVersion":"10.13"},"product":{"name":"debian","label":"Debian","category":"os"}},"hubHref":"/vendor/debian/debian_linux"},{"vendor":"fedoraproject","product":"fedora","name":"fedora","label":"fedora","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"33","noFixRecorded":false,"fixedIn":null},{"text":"34","noFixRecorded":false,"fixedIn":null},{"text":"35","noFixRecorded":false,"fixedIn":null}],"versionsText":"33 | 34 | 35","eol":{"isEol":true,"eolDate":"2021-11-30T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"33","label":"33","eolFrom":"2021-11-30T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":null},"product":{"name":"fedora","label":"Fedora Linux","category":"os"}},"hubHref":"/vendor/fedoraproject/fedora"},{"vendor":"google","product":"chrome","name":"chrome","label":"chrome","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 94.0.4606.71","noFixRecorded":false,"fixedIn":null},{"text":"< 94.0.4606.71","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 94.0.4606.71 | < 94.0.4606.71","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"chrome","label":"Google Chrome","category":"app"}},"hubHref":"/vendor/google/chrome"}],"affectedCount":5,"eol":{"hasEol":true,"count":2},"references":[{"url":"https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_30.html","label":"chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_30.html","hostname":"chromereleases.googleblog.com","tags":["Release Notes"]},{"url":"https://crbug.com/1252918","label":"crbug.com/1252918","hostname":"crbug.com","tags":["Permissions Required"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D63JZ3ROXCUHP4CFWDHCPZNTGET7T34R/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","Release Notes"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRFXUDH46PFVE75VQVWY6PYY5DK3S2XT/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","Release Notes"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNARCF5HEZK7GJXZRN5TQ45AQDCRM2WO/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","Release Notes"]},{"url":"https://www.debian.org/security/2022/dsa-5046","label":"www.debian.org/security/2022/dsa-5046","hostname":"www.debian.org","tags":["Vendor Advisory","Mailing List","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/172847/Chrome-V8-Logic-Bug-Use-After-Free.html","label":"packetstormsecurity.com/files/172847/Chrome-V8-Logic-Bug-Use-After-Free.html","hostname":"packetstormsecurity.com","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37975","label":"www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-37975","hostname":"www.cisa.gov","tags":["Government Resource","US Government Resource"]},{"url":"https://ubuntu.com/security/CVE-2021-37975","label":"ubuntu.com/security/CVE-2021-37975","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-37975","label":"www.cve.org/CVERecord?id=CVE-2021-37975","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","label":"www.cisa.gov/known-exploited-vulnerabilities-catalog","hostname":"www.cisa.gov","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-37975","label":"security-tracker.debian.org/tracker/CVE-2021-37975","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DSA-5046-1","MGASA-2022-0050","OPENSUSE-SU-2021:1339-1","OPENSUSE-SU-2021:1350-1","OPENSUSE-SU-2021:1358-1","OPENSUSE-SU-2021:1433-1","OPENSUSE-SU-2021:1434-1","OPENSUSE-SU-2022:0110-1","OPENSUSE-SU-2024:11555-1","OPENSUSE-SU-2024:12948-1"],"duplicates":[],"related":["OPENSUSE-SU-2021:1339-1","OPENSUSE-SU-2021:1350-1","OPENSUSE-SU-2021:1358-1","OPENSUSE-SU-2021:1433-1","OPENSUSE-SU-2021:1434-1","OPENSUSE-SU-2022:0110-1","OPENSUSE-SU-2024:11555-1","OPENSUSE-SU-2024:12948-1"]},"timeline":[{"kind":"published","date":"2021-10-08T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"kev-added","date":"2021-11-03T00:00:00.000Z","label":"Added to CISA KEV","detail":"Google Chromium V8 Use-After-Free Vulnerability","source":"cisa"},{"kind":"kev-due","date":"2021-11-17T00:00:00.000Z","label":"CISA remediation due","detail":"Apply updates per vendor instructions.","source":"cisa"},{"kind":"modified","date":"2025-10-21T23:25:29.815Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":85,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T07:26:42.720Z","stale":false,"partial":false}}