Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability
Published Aug 21, 2019
9.8
CRITICALCVSS 3.0
EPSS 75.86%
Description
A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow an unauthenticated, remote attacker to acquire a valid session token with administrator privileges, bypassing user authentication. The vulnerability is due to insufficient request header validation during the authentication process. An attacker could exploit this vulnerability by sending a series of malicious requests to an affected device. An exploit could allow the attacker to use the acquired session token to gain full administrator access to the affected device.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<6.7.3.0
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Unified Computing System Director | n/a |
|
Configuration 1
- ≥ 2.2.0.3 · ≤ 2.2.0.6
Configuration 2
- ≥ 6.6.0.0 · ≤ 6.6.1.0
- ≥ 6.7.0.0 · ≤ 6.7.1.0
- 6.7\(0.0.67265\)
Configuration 3
- ≥ 3.7.0.0 · ≤ 3.7.1.0
- 3.6.0.0
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: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 2, 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 (25 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 75.86% (0.75863) | 99.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 75.86% (0.75863) | 99.47th | v5 (v2026.06.15) |
| Nov 21, 2025 | 90.90% (0.90896) | 99.60th | v4 (v2025.03.14) |
| Nov 18, 2025 | 80.58% (0.80583) | 99.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 91.29% (0.91291) | 99.65th | v4 (v2025.03.14) |
| Jan 11, 2025 | 50.29% (0.50288) | 97.64th | v3 (v2023.03.01) |
| Dec 17, 2024 | 53.12% (0.53120) | 97.72th | v3 (v2023.03.01) |
| Oct 25, 2024 | 40.41% (0.40406) | 97.35th | v3 (v2023.03.01) |
| Jul 12, 2024 | 42.71% (0.42707) | 97.37th | v3 (v2023.03.01) |
| Jun 10, 2024 | 40.64% (0.40644) | 97.29th | v3 (v2023.03.01) |
| Apr 17, 2024 | 44.36% (0.44362) | 97.33th | v3 (v2023.03.01) |
| Apr 5, 2024 | 43.70% (0.43705) | 97.29th | v3 (v2023.03.01) |
| Nov 30, 2023 | 44.70% (0.44696) | 97.03th | v3 (v2023.03.01) |
| Jul 28, 2023 | 37.04% (0.37043) | 96.66th | v3 (v2023.03.01) |
| Jul 18, 2023 | 38.19% (0.38185) | 96.70th | v3 (v2023.03.01) |
| Jul 16, 2023 | 20.74% (0.20737) | 95.73th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.13% (0.01127) | 82.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 18.20% (0.18199) | 93.53th | v2 (v2022.01.01) |
| Feb 3, 2022 | 35.90% (0.35900) | 97.94th | v1 |
| Jan 6, 2022 | 35.90% (0.35900) | 97.91th | v1 |
| Sep 1, 2021 | 11.10% (0.11097) | 95.29th | v1 |
| Apr 14, 2021 | 11.10% (0.11097) | 0.00th | v1 |
References (6)
- http://packetstormsecurity.com/files/154239/Cisco-UCS-IMC-Supervisor-Authentication-Bypass-Command-Injection.html ExploitThird Party Advisory
- http://packetstormsecurity.com/files/154308/Cisco-UCS-Director-Unauthenticated-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/173531/Cisco-UCS-IMC-Supervisor-2.2.0.0-Authentication-Bypass.html
- http://seclists.org/fulldisclosure/2019/Aug/36 mailing-list
- https://seclists.org/bugtraq/2019/Aug/49 mailing-listThird Party Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-imcs-ucs-authby vendor-advisoryVendor Advisory
Change history (0)
No recorded changes yet.