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    CVE-2021-3661

    A potential security vulnerability has been identified in certain HP Workstation BIOS (UEFI firmware) which may allow arbitrary code execution. HP is releasing firmware mitigations for the potential vulnerability.

    Published:Nov 21, 2022
    Last Modified:Apr 29, 2025
    EPS:Nov 21, 2022
    EPSS Score:0.01488
    CVSS Score:8.4

    Affected Products

    Vendor
    Hp
    Product
    Z1 All-in-one G3
    Vendor
    Hp
    Product
    Z1 All-in-one G3 Firmware
    Vendor
    Hp
    Product
    Z238 Microtower
    Vendor
    Hp
    Product
    Z238 Microtower Firmware
    Vendor
    Hp
    Product
    Z240 Small Form Factor
    Vendor
    Hp
    Product
    Z240 Small Form Factor Firmware
    Vendor
    Hp
    Product
    Z240 Tower
    Vendor
    Hp
    Product
    Z240 Tower Firmware
    Vendor
    Hp
    Product
    Z2 Mini G3
    Vendor
    Hp
    Product
    Z2 Mini G3 Firmware
    Vendor
    Hp
    Product
    Z2 Mini G4
    Vendor
    Hp
    Product
    Z2 Mini G4 Firmware
    Vendor
    Hp
    Product
    Z2 Mini G5
    Vendor
    Hp
    Product
    Z2 Mini G5 Firmware
    Vendor
    Hp
    Product
    Z2 Small Form Factor G4
    Vendor
    Hp
    Product
    Z2 Small Form Factor G4 Firmware
    Vendor
    Hp
    Product
    Z2 Small Form Factor G5
    Vendor
    Hp
    Product
    Z2 Small Form Factor G5 Firmware
    Vendor
    Hp
    Product
    Z2 Small Form Factor G8
    Vendor
    Hp
    Product
    Z2 Small Form Factor G8 Firmware
    Vendor
    Hp
    Product
    Z2 Tower G4
    Vendor
    Hp
    Product
    Z2 Tower G4 Firmware
    Vendor
    Hp
    Product
    Z2 Tower G5
    Vendor
    Hp
    Product
    Z2 Tower G5 Firmware
    Vendor
    Hp
    Product
    Z2 Tower G8
    Vendor
    Hp
    Product
    Z2 Tower G8 Firmware
    Vendor
    Hp
    Product
    Z440
    Vendor
    Hp
    Product
    Z440 Firmware
    Vendor
    Hp
    Product
    Z4 G4
    Vendor
    Hp
    Product
    Z4 G4 Firmware
    Vendor
    Hp
    Product
    Z640
    Vendor
    Hp
    Product
    Z640 Firmware
    Vendor
    Hp
    Product
    Z6 G4
    Vendor
    Hp
    Product
    Z6 G4 Firmware
    Vendor
    Hp
    Product
    Z840
    Vendor
    Hp
    Product
    Z840 Firmware
    Vendor
    Hp
    Product
    Z8 G4
    Vendor
    Hp
    Product
    Z8 G4 Firmware
    Vendor
    Hp
    Product
    Zcentral 4r
    Vendor
    Hp
    Product
    Zcentral 4r Firmware

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High