CVSS 3.1
6.6 mediumCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2019-1736
Medium (6.6) in cisco. EPSS 0.2% chance of exploitation in the next 30 days.
A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-31)
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- cisco:fmc1000-k9_bios
- cisco:fmc1000-k9_firmware
- cisco:fmc2500-k9_bios
- cisco:fmc2500-k9_firmware
- cisco:fmc4500-k9_bios
- cisco:fmc4500-k9_firmware
- cisco:identity_services_engine
- cisco:sns-3515-k9_bios
- cisco:sns-3515-k9_firmware
- cisco:sns-3595-k9_bios
- cisco:sns-3595-k9_firmware
- cisco:sns-3615-k9_bios
- cisco:sns-3615-k9_firmware
- cisco:sns-3655-k9_bios
- cisco:sns-3655-k9_firmware
- cisco:sns-3695-k9_bios
- cisco:sns-3695-k9_firmware
- cisco:tg5004-k9-rf_bios
- cisco:tg5004-k9-rf_firmware
- cisco:tg5004-k9_bios
- cisco:tg5004-k9_firmware
- cisco:unified_computing_system