{"id":"CVE-2026-56898","aliases":[],"cve":{"records":[{"id":"CVE-2026-56898","source":"Google_Devices","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-06-23T16:07:18.916Z","published":"2026-11-10T19:20:31.168Z","modified":"2026-11-13T14:38:02.388Z"}],"publishers":[{"name":"Google_Devices","role":"CNA","organizationId":"83238938-5644-45f0-9007-c0392bcf6222","modified":"2026-11-10T19:20:31.168Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-13T14:38:02.388Z"}],"references":[{"url":"https://source.android.com/docs/security/bulletin/pixel/2026/2026-11-01","tags":[],"source":"Google_Devices"}],"weaknesses":[{"id":"CWE-327","description":"CWE-327 Use of a Broken or Risky Cryptographic Algorithm","source":"CISA-ADP"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-13T05:02:27.896571Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"In aes256_cmac_sw of aes.rs, there is a possible way to forge message authentication codes over multi-block messages due to improperly used crypto.","titleSource":"Google_Devices","descriptionSource":"Google_Devices","description":"In aes256_cmac_sw of aes.rs, there is a possible way to forge message authentication codes over multi-block messages due to improperly used crypto. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","score":8.4,"severity":"high","published":"2026-11-10T19:20:31.168Z","modified":"2026-11-13T14:38:02.388Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Google","name":"Android","platforms":[],"versions":[{"version":"Android kernel","status":"affected"}],"defaultStatus":"unaffected","cpes":[],"source":"Google_Devices","url":"https://www.cve.org/CVERecord?id=CVE-2026-56898"}],"remediation":[],"references":["https://source.android.com/docs/security/bulletin/pixel/2026/2026-11-01"],"sources":[{"name":"CVE","id":"CVE-2026-56898","modified":"2026-11-13T14:38:02.388Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-56898"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4}],"sourceAffected":[],"observedAt":"2026-11-13T16:34:13.278Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T03:35:31.150Z"},"coverage":[{"source":"NVD","status":"refresh-failed","attemptedAt":"2026-11-13T12:25:33.720Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-13T12:25:36.921Z","attemptedAt":"2026-11-13T12:25:36.921Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-13T12:25:37.091Z","attemptedAt":"2026-11-13T12:25:37.091Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-13T12:25:36.413Z","attemptedAt":"2026-11-13T12:25:36.413Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-56898","url":"https://www.first.org/epss/","probability":0.00142,"percentile":0.03581,"date":"2026-11-12","checkedAt":"2026-11-13T12:25:36.413Z"},{"source":"GitHub Advisory Database","id":"GHSA-7xc5-48xx-c9vw","url":"https://github.com/advisories/GHSA-7xc5-48xx-c9vw","modified":"2026-11-10T21:34:39Z","checkedAt":"2026-11-13T12:25:36.921Z"},{"source":"ENISA EUVD","id":"EUVD-2026-122716","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-122716","modified":"Nov 13, 2026, 5:02:27 AM","checkedAt":"2026-11-13T12:25:37.091Z"}],"aiSummary":{"text":"Android kernel is affected by a vulnerability in aes256_cmac_sw, allowing message authentication code forgery over multi-block messages due to improper crypto use, potentially leading to local privilege escalation. User interaction is not required. The weakness is related to a broken cryptographic algorithm.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-13T16:36:12.490Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-56898"}]}}