Vulnerability Details CVE-2019-1736
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.6%
CVSS Severity
CVSS v3 Score 6.2
CVSS v2 Score 6.9
Products affected by CVE-2019-1736
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cpe:2.3:a:cisco:identity_services_engine:2.4(0.357)
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cpe:2.3:a:cisco:identity_services_engine:2.6(0.156)
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cpe:2.3:a:cisco:unified_computing_system:3.2(3h)c
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cpe:2.3:o:cisco:fmc1000-k9_bios:*
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cpe:2.3:o:cisco:fmc1000-k9_firmware:*
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cpe:2.3:o:cisco:fmc2500-k9_bios:*
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cpe:2.3:o:cisco:fmc2500-k9_firmware:*
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cpe:2.3:o:cisco:fmc4500-k9_bios:*
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cpe:2.3:o:cisco:fmc4500-k9_firmware:*
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cpe:2.3:o:cisco:sns-3515-k9_bios:*
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cpe:2.3:o:cisco:sns-3515-k9_firmware:*
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cpe:2.3:o:cisco:sns-3595-k9_bios:*
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cpe:2.3:o:cisco:sns-3595-k9_firmware:*
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cpe:2.3:o:cisco:sns-3615-k9_bios:*
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cpe:2.3:o:cisco:sns-3615-k9_firmware:*
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cpe:2.3:o:cisco:sns-3655-k9_bios:*
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cpe:2.3:o:cisco:sns-3655-k9_firmware:*
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cpe:2.3:o:cisco:sns-3695-k9_bios:*
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cpe:2.3:o:cisco:sns-3695-k9_firmware:*
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cpe:2.3:o:cisco:tg5004-k9-rf_bios:*
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cpe:2.3:o:cisco:tg5004-k9-rf_firmware:*
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cpe:2.3:o:cisco:tg5004-k9_bios:*
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cpe:2.3:o:cisco:tg5004-k9_firmware:*