A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication
Published Aug 7, 2017
9.8
CRITICALCVSS 3.0
EPSS 5.48%
Description
A vulnerability in the authentication module of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass local authentication. The vulnerability is due to improper handling of authentication requests and policy assignment for externally authenticated users. An attacker could exploit this vulnerability by authenticating with a valid external user account that matches an internal username and incorrectly receiving the authorization policy of the internal account. An exploit could allow the attacker to have Super Admin privileges for the ISE Admin portal. This vulnerability does not affect endpoints authenticating to the ISE. The vulnerability affects Cisco ISE, Cisco ISE Express, and Cisco ISE Virtual Appliance running Release 1.3, 1.4, 2.0.0, 2.0.1, or 2.1.0. Release 2.2.x is not affected. Cisco Bug IDs: CSCvb10995.
Affected products
- Vendor n/a Product Cisco Identity Services Engine Defaultn/a
- Version Cisco Identity Services EngineStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco Identity Services Engine | n/a |
|
- 1.3\(0.722\)
- 1.3\(0.876\)
- 1.3\(0.909\)
- 1.3\(106.146\)
- 1.3\(120.135\)
- 1.4\(0.109\)
- 1.4\(0.181\)
- 1.4\(0.253\)
- 1.4\(0.908\)
- 2.0\(0.147\)
- 2.0\(0.169\)
- 2.0\(0.222\)
- 2.0\(1.130\)
- 2.0_base
- 2.1\(0.474\)
- 2.1\(0.800\)
- 2.1\(102.101\)
- 2.1_base
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.48% (0.05476) | 92.51th | v5 (v2026.06.15) |
| Sep 22, 2026 | 5.48% (0.05476) | 92.40th | v5 (v2026.06.15) |
| Sep 21, 2026 | 4.47% (0.04471) | 91.04th | v5 (v2026.06.15) |
| Sep 6, 2026 | 5.48% (0.05476) | 92.23th | v5 (v2026.06.15) |
| Sep 5, 2026 | 4.47% (0.04471) | 90.84th | v5 (v2026.06.15) |
| Aug 30, 2026 | 5.48% (0.05476) | 92.19th | v5 (v2026.06.15) |
| Aug 28, 2026 | 4.47% (0.04471) | 90.78th | v5 (v2026.06.15) |
| Aug 24, 2026 | 5.48% (0.05476) | 92.14th | v5 (v2026.06.15) |
| Aug 23, 2026 | 4.47% (0.04471) | 90.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.48% (0.05476) | 91.71th | v5 (v2026.06.15) |
| Jun 5, 2025 | 2.25% (0.02246) | 83.75th | v4 (v2025.03.14) |
| Apr 29, 2025 | 3.97% (0.03972) | 87.72th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.30% (0.05298) | 89.05th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.61% (0.08614) | 87.17th | v4 (v2025.03.14) |
| Mar 19, 2025 | 5.30% (0.05298) | 88.78th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.26% (0.04262) | 88.06th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.32% (0.00322) | 70.93th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00322) | 69.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.32% (0.00322) | 65.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.42% (0.00418) | 10.05th | v1 |
| Jan 6, 2022 | 0.42% (0.00418) | 9.80th | v1 |
| Sep 1, 2021 | 0.42% (0.00418) | 25.53th | v1 |
| Apr 14, 2021 | 0.42% (0.00418) | 0.00th | v1 |
References (2)
- http://www.securitytracker.com/id/1039054 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-ise x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1039054 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170802-ise | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.