Improper access control in Cisco UCS Director
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.
Summary
A vulnerability in role-based access control of Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data could allow a read-only authenticated, remote attacker to disable user accounts on an affected system. The vulnerability is due to incorrect allocation of the enable/disable action button under the role-based access control code on an affected system. An attacker could exploit this vulnerability by authenticating as a read-only user and then updating the roles of other users to disable them. A successful exploit could allow the attacker to disable users, including administrative users.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco UCS Director | all versions | — | No fix listed | CNA |
- Cisco UCS Director VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:integrated_management_controller_supervisor:*:*:*:*:*:*:*:* | 1.1.0.0 to before 2.2.1.3 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:ucs_director:*:*:*:*:*:*:*:* | 5.4.0.0 to before 6.7.4.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:ucs_director_express_for_big_data:*:*:*:*:*:*:*:* | 2.0.0.0 to before 3.7.4.0 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:integrated_management_controller_supervisor:*:*:*:*:*:*:*:* Versions 1.1.0.0 to before 2.2.1.3 Vulnerable ·Cisco
- cpe:2.3:a:cisco:ucs_director:*:*:*:*:*:*:*:* Versions 5.4.0.0 to before 6.7.4.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:ucs_director_express_for_big_data:*:*:*:*:*:*:*:* Versions 2.0.0.0 to before 3.7.4.0 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-3329
- 2026-10-03 Alias added: GHSA-r92q-j6h7-wh5j
References
More Cisco Integrated Management Controller Supervisor vulnerabilities
- TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
- TI-2019-01555 Hard-coded credentials in Cisco Unified Computing System Director CVSS 3.1CRITICAL 9.8
- TI-2019-01557 Improper authentication in Cisco Unified Computing System Director CVSS 3.0CRITICAL 9.8
- TI-2019-01556 Improper input validation in Cisco Unified Computing System Director CVSS 3.1HIGH 7.2
- TI-2019-01594 Improper authentication in Cisco Unified Computing System Director CVSS 3.0CRITICAL 9.8
- TI-2019-01487 Cisco Integrated Management Controller Command Injection Vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2020-3329 · CVE Program
- CVE-2020-3329 · NVD
- FIRST EPSS
- GHSA-r92q-j6h7-wh5j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences