CISCO-FIREPOWER-IMGSEC-MIB

Description: Provides management objects for image security verification, signing, and integrity checking on Cisco UCS/Firepower platforms.

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CISCO-FIREPOWER-IMGSEC-MIB models the image security subsystem of Cisco Firepower/UCS platforms, covering cryptographic keys and policies used to verify and sign software images and enforce image-integrity checks before installation or boot. It exposes a key table (key type and value) and a policy table describing image-security enforcement rules applied to the system. Its role in monitoring is focused on software integrity/security posture rather than physical hardware: administrators use it to confirm which signing/verification keys are registered and which image-security policies are active, helping detect a missing or unexpected key that would cause image validation failures during upgrade. As part of the Cisco Firepower/UCS management-information-model family, it works alongside sibling MIBs such as CISCO-FIREPOWER-SYSFILE-MIB, whose digest/checksum data can be cross-checked here for software supply-chain integrity. It is deployed on Cisco Firepower security appliances and UCS compute platforms where secure boot and signed-image enforcement are required, typically in security-conscious data centers relying on CISCO-FIREPOWER-IMGSEC-MIB SNMP monitoring to verify image-security posture.

A security administrator would poll cfprImgsecKeyTable/cfprImgsecKeyEntry to enumerate cfprImgsecKeyType and cfprImgsecKeyValue entries, confirming the expected vendor signing key is present and no unauthorized key has been injected. Checking cfprImgsecPolicyTable for active policies helps verify that image-signature enforcement is turned on system-wide before a firmware upgrade is attempted. If an upgrade fails signature validation, correlating the key table against digest data from the sibling SYSFILE MIB can pinpoint whether the failure is a key mismatch or a corrupted image file.

MIB representation of Cisco Firepower image security management information model package.