{"id":"CVE-2021-1048","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-1048","generatedAt":"2026-10-27T22:25:29.826Z","title":"Android Kernel Use-After-Free Vulnerability","description":"In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-204573007References: Upstream kernel","published":"2021-12-15T19:15:15.000Z","lastModified":"2026-06-17T03:30:52.000Z","status":"Analyzed","sourceIdentifier":"security@android.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416"],"affected":["google/android"],"epss":{"score":0.01058,"percentile":0.64243,"date":"2026-10-26","history":[]},"kev":{"listed":true,"dateAdded":"2022-05-23","dueDate":"2022-06-13","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-1048"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 13 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://source.android.com/security/bulletin/2021-11-01","tags":["Patch","Vendor Advisory"],"source":"security@android.com"},{"url":"https://source.android.com/security/bulletin/2021-11-01","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1048","tags":["Third Party Advisory","US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-1048","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."}