{"id":"CVE-2021-21171","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-21171","generatedAt":"2026-10-27T23:34:24.559Z","title":"Incorrect security UI in TabStrip and Navigation in Google Chrome on Android prior to 89.0.4389.72 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.","description":"Incorrect security UI in TabStrip and Navigation in Google Chrome on Android prior to 89.0.4389.72 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.","published":"2021-03-09T18:15:17.000Z","lastModified":"2026-06-17T03:34:58.000Z","status":"Modified","sourceIdentifier":"chrome-cve-admin@google.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},"cwe":[],"affected":["google/chrome","fedoraproject/fedora","debian/debian linux"],"epss":{"score":0.01659,"percentile":0.76478,"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":"low","text":"Lower severity and a low EPSS score (1.66%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html","tags":["Release Notes","Vendor Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://crbug.com/1152894","tags":["Exploit","Issue Tracking","Patch","Permissions Required","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/","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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/","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":"https://www.debian.org/security/2021/dsa-4886","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://crbug.com/1152894","tags":["Exploit","Issue Tracking","Patch","Permissions Required","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/","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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202104-08","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2021/dsa-4886","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21171","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."}