high
8.4
Advisory Published
Updated

CVE-2021-3661

First published: Mon Nov 21 2022(Updated: )

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.

Credit: hp-security-alert@hp.com

Affected SoftwareAffected VersionHow to fix
Hp Z1 All-in-one G3 Firmware=01.31
Hp Z1 All-in-one G3
Hp Z2 Mini G3 Firmware=01.83
Hp Z2 Mini G3
Hp Z2 Mini G4 Firmware=01.08.01
Hp Z2 Mini G4
Hp Z2 Mini G5 Firmware=01.03.00_rev_a
Hp Z2 Mini G5
Hp Z2 Small Form Factor G4 Firmware=01.08.01
Hp Z2 Small Form Factor G4
Hp Z2 Small Form Factor G5 Firmware=01.03.00_rev_a
Hp Z2 Small Form Factor G5
Hp Z2 Small Form Factor G8 Firmware=01.03.00_rev_a
Hp Z2 Small Form Factor G8
Hp Z2 Tower G4 Firmware=01.08.01
Hp Z2 Tower G4
Hp Z2 Tower G5 Firmware=01.03.00_rev_a
Hp Z2 Tower G5
Hp Z2 Tower G8 Firmware=01.03.00_rev_a
Hp Z2 Tower G8
Hp Z238 Microtower Firmware=01.83
Hp Z238 Microtower
Hp Z240 Small Form Factor Firmware=01.83
Hp Z240 Small Form Factor
Hp Z240 Tower Firmware=01.83
Hp Z240 Tower
Hp Z4 G4 Firmware=02.75
Hp Z4 G4
Hp Z440 Firmware=2.58
Hp Z440
Hp Z6 G4 Firmware=02.75
Hp Z6 G4
Hp Z640 Firmware=2.58
Hp Z640
Hp Z8 G4 Firmware=02.75
Hp Z8 G4
Hp Z840 Firmware=2.58
Hp Z840
Hp Zcentral 4r Firmware=01.18
Hp Zcentral 4r

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-3661?

    CVE-2021-3661 refers to a potential security vulnerability identified in certain HP Workstation BIOS (UEFI firmware) that may allow arbitrary code execution.

  • Which HP Workstations are affected by CVE-2021-3661?

    The HP Z1 All-in-one G3, HP Z2 Mini G3, HP Z2 Mini G4, HP Z2 Mini G5, HP Z2 Small Form Factor G4, HP Z2 Small Form Factor G5, HP Z2 Small Form Factor G8, HP Z2 Tower G4, HP Z2 Tower G5, HP Z2 Tower G8, HP Z238 Microtower, HP Z240 Small Form Factor, HP Z240 Tower, HP Z4 G4, HP Z440, HP Z6 G4, HP Z640, HP Z8 G4, and HP Z840 are affected by CVE-2021-3661.

  • What is the severity of CVE-2021-3661?

    CVE-2021-3661 has a severity rating of 8.4, which is considered high.

  • How can I mitigate the vulnerability in my HP Workstation?

    HP is releasing firmware mitigations for the vulnerability. Please refer to the HP support document for more information on the mitigation steps.

  • Where can I find more information about CVE-2021-3661?

    You can find more information about CVE-2021-3661 in the HP support document available at the provided reference link.

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