CVE-2021-3809: HP Elite Dragonfly Firmware

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Potential security vulnerabilities have been identified in the BIOS (UEFI Firmware) for certain HP PC products, which might allow arbitrary code execution. HP is releasing firmware updates to mitigate these potential vulnerabilities.

Affected products

• HP Elite Dragonfly Firmware: version 01.12.00 only
• HP Elite Slice Firmware: version 2.55 only
• HP Elite Slice g2 Firmware: version 2.55 only
• HP Elite x2 1012 g2 Firmware: version 1.41 only
• HP Elite x2 1013 g3 Firmware: version 01.19.00 only
• HP Elite x2 g4 Firmware: version 01.12.00 only
• HP Elitebook 1040 g4 Firmware: version 1.41 only
• HP Elitebook 1050 g1 Firmware: version 01.19.00 only
• HP Elitebook 725 g4 Firmware: version 1.4 only
• HP Elitebook 735 g5 Firmware: version 01.20.00 only
• HP Elitebook 735 g6 Firmware: version 01.19.00 only
• HP Elitebook 745 g4 Firmware: version 1.4 only
• HP Elitebook 745 g5 Firmware: version 01.20.00 only
• HP Elitebook 745 g6 Firmware: version 01.19.00 only
• HP Elitebook 755 g4 Firmware: version 1.4 only
• HP Elitebook 755 g5 Firmware: version 01.20.00 only
• HP Elitebook 820 g4 Firmware: version 1.41 only
• HP Elitebook 828 g4 Firmware: version 1.41 only
• HP Elitebook 830 g5 Firmware: version 01.19.00 only
• HP Elitebook 830 g6 Firmware: version 01.12.00 only
• HP Elitebook 836 g5 Firmware: version 01.19.00 only
• HP Elitebook 836 g6 Firmware: version 01.12.00 only
• HP Elitebook 840 g4 Firmware: version 1.41 only
• HP Elitebook 840 g5 Firmware: version 01.19.00 only
• HP Elitebook 840 g6 Firmware: version 01.12.00 only
• and 156 more

Published 2023-02-01. Last modified 2026-06-17.