{"id":"CVE-2023-21218","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-21218","generatedAt":"2026-10-27T21:48:46.161Z","title":"This could lead to local escalation of privilege in the kernel with no additional execution privileges needed.","description":"In PMRChangeSparseMemOSMem of physmem_osmem_linux.c, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.","published":"2023-12-04T23:15:23.000Z","lastModified":"2026-06-17T05:32:06.000Z","status":"Modified","sourceIdentifier":"security@android.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["google/android"],"epss":{"score":0.00414,"percentile":0.35401,"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 (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://source.android.com/security/bulletin/2023-12-01","tags":["Vendor Advisory"],"source":"security@android.com"},{"url":"https://source.android.com/security/bulletin/2023-12-01","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-21218","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."}