Cisco Unified Computing System BIOS Signature Bypass Vulnerability
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-345.
Summary
A vulnerability in the BIOS upgrade utility of Cisco Unified Computing System (UCS) C-Series Rack Servers could allow an authenticated, local attacker to install compromised BIOS firmware on an affected device. The vulnerability is due to insufficient validation of the firmware image file. An attacker could exploit this vulnerability by executing the BIOS upgrade utility with a specific set of options. A successful exploit could allow the attacker to bypass the firmware signature-verification process and install compromised BIOS firmware on an affected device.
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 Unified Computing System (Managed) | before 4.0(4c) | 4.0(4c) | Patch available | CNA |
- Cisco Unified Computing System (Managed) VendorCisco Affected before 4.0(4c) Fixed in 4.0(4c) Patch available CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:* | before 4.0\(2g\) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c125_m5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:* | before 3.0\(4l\); 4.0 to before 4.0\(2g\) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c220_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:* | before 4.0\(4c\) | Vulnerable | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c220_m5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c240_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c240_m5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c460_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:unified_computing_system_c480_m5:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:* Versions before 4.0\(2g\) Vulnerable ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c125_m5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:* Versions before 3.0\(4l\); 4.0 to before 4.0\(2g\) Vulnerable ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c220_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:* Versions before 4.0\(4c\) Vulnerable ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c220_m5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c240_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c240_m5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c460_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:unified_computing_system_c480_m5:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
- Fix · CNA Cisco Unified Computing System (Managed) (Cisco) Fixed in 4.0(4c)
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1880
- 2026-10-03 Alias added: GHSA-jhpv-9w3g-h4m8
References
Sources
- CVE-2019-1880 · CVE Program
- CVE-2019-1880 · NVD
- FIRST EPSS
- GHSA-jhpv-9w3g-h4m8 · 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