{"id":"CVE-2021-21156","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-21156","generatedAt":"2026-10-27T20:21:06.359Z","title":"Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted script.","description":"Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted script.","published":"2021-02-22T22:15:13.000Z","lastModified":"2026-06-17T03:34:56.000Z","status":"Modified","sourceIdentifier":"chrome-cve-admin@google.com","cvss":{"version":"3.1","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"},"cwe":["CWE-787"],"affected":["google/chrome","fedoraproject/fedora"],"epss":{"score":0.02703,"percentile":0.85847,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html","tags":["Third Party Advisory","VDB Entry"],"source":"chrome-cve-admin@google.com"},{"url":"https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html","tags":["Release Notes","Vendor Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://crbug.com/1177341","tags":["Permissions Required","Vendor Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/","source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/","source":"chrome-cve-admin@google.com"},{"url":"https://security.gentoo.org/glsa/202104-08","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://crbug.com/1177341","tags":["Permissions Required","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202104-08","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21156","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}