Android 6.0 has an authentication bypass for attackers with root and physical access
Published Jul 14, 2017
6.2
MEDIUMCVSS 3.0
EPSS 0.22%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.22% (0.00218) | 11.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.19% (0.00190) | 8.78th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.01% (0.00014) | 1.39th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 14.58th | v3 (v2023.03.01) |
| Jun 4, 2024 | 0.04% (0.00044) | 12.37th | v3 (v2023.03.01) |
| Jun 24, 2023 | 0.04% (0.00044) | 10.36th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00047) | 14.17th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.52% (0.01525) | 73.77th | v2 (v2022.01.01) |
| Aug 13, 2022 | 1.52% (0.01525) | 72.62th | v2 (v2022.01.01) |
| Jun 9, 2022 | 1.24% (0.01238) | 65.50th | v2 (v2022.01.01) |
| Apr 10, 2022 | 1.14% (0.01135) | 52.72th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.04% (0.01036) | 39.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.04% (0.01036) | 20.62th | v2 (v2022.01.01) |
References (1)
- https://homepages.staff.os3.nl/~delaat/rp/2015-2016/p30/report.pdf x_refsource_MISCTechnical DescriptionThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://homepages.staff.os3.nl/~delaat/rp/2015-2016/p30/report.pdf | x_refsource_MISCTechnical DescriptionThird Party Advisory |
Change history (0)
No recorded changes yet.