A vulnerability in BIOS authentication management of Cisco 5000 Series Enterprise Network Compute System and Cisco Unified Computing (UCS) E-Series Servers could allow an unauthenticated, local attacker to bypass the BIOS authentication and execute actions as an unprivileged user
Published Jun 21, 2018
4.3
MEDIUMCVSS 3.0
EPSS 0.35%
Description
A vulnerability in BIOS authentication management of Cisco 5000 Series Enterprise Network Compute System and Cisco Unified Computing (UCS) E-Series Servers could allow an unauthenticated, local attacker to bypass the BIOS authentication and execute actions as an unprivileged user. The vulnerability is due to improper security restrictions that are imposed by the affected system. An attacker could exploit this vulnerability by submitting an empty password value to an affected device's BIOS authentication prompt. An exploit could allow the attacker to have access to a restricted set of user-level BIOS commands. Cisco Bug IDs: CSCvh83260.
Affected products
No data.
Configuration 1
- 3.2\(3\)
Running on/with
- n/a
Configuration 2
- 3.2\(3\)
Running on/with
- n/a
Configuration 3
- 3.2\(3\)
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- n/a
Configuration 4
- 3.2\(3\)
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- n/a
Configuration 5
- 3.2\(3\)
Running on/with
- n/a
Configuration 6
- 3.2\(3\)
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- n/a
Configuration 7
- 3.2\(3\)
Running on/with
- n/a
Configuration 8
- 3.2\(3\)
Running on/with
- n/a
Configuration 9
- 3.2\(3\)
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- n/a
Configuration 10
- 3.2\(3\)
Running on/with
- n/a
Configuration 11
- 3.2\(3\)
Running on/with
- n/a
Configuration 12
- 3.2\(3\)
Running on/with
- n/a
Configuration 13
- 3.2\(3\)
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- n/a
Configuration 14
- 3.2\(3\)
Running on/with
- n/a
Configuration 15
- 3.2\(3\)
Running on/with
- n/a
Configuration 16
- 3.2\(3\)
Running on/with
- n/a
Configuration 17
- 3.2\(3\)
Running on/with
- n/a
Configuration 18
- 3.2\(3\)
Running on/with
- n/a
Configuration 19
- 3.2\(3\)
Running on/with
- n/a
Configuration 20
- 3.2\(3\)
Running on/with
- n/a
Configuration 21
- 3.2\(3\)
Running on/with
- n/a
Configuration 22
- 3.2\(3\)
Running on/with
- n/a
Configuration 23
- 3.2\(3\)
Running on/with
- n/a
Configuration 24
- 3.2\(3\)
Running on/with
- n/a
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:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Nov 29, 2024 · SSVC 2.0.3
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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.35% (0.00353) | 26.57th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.35% (0.00353) | 28.99th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.05% (0.00052) | 20.88th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.05% (0.00052) | 20.42th | v3 (v2023.03.01) |
| Apr 18, 2024 | 0.05% (0.00051) | 18.39th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00049) | 16.36th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.33% (0.00332) | 3.01th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.33% (0.00332) | 0.00th | v1 |
References (2)
- http://www.securitytracker.com/id/1041173 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-encs-ucs-bios-auth-bypass x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id/1041173 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-encs-ucs-bios-auth-bypass | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.