{"cve":"CVE-2016-10398","nvd":{"published":"2017-07-17T13:18:05.623","modified":"2026-06-17T00:39:36.063","status":"Modified","description":"Android 6.0 has an authentication bypass for attackers with root and physical access. Cryptographic authentication tokens (AuthTokens) used by the Trusted Execution Environment (TEE) are protected by a weak challenge. This allows adversaries to replay previously captured responses and use the TEE without authenticating. All apps using authentication-gated cryptography are vulnerable to this attack, which was confirmed on the LG Nexus 5X.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":6.2},"cwes":["CWE-264"],"references":["https://homepages.staff.os3.nl/~delaat/rp/2015-2016/p30/report.pdf","https://homepages.staff.os3.nl/~delaat/rp/2015-2016/p30/report.pdf"],"products":["google:android"],"source":"nvd","synced_at":"2026-10-19T20:43:44.556243339+00:00"},"epss":{"cve":"CVE-2016-10398","score":0.00218,"percentile":0.12305,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}