What’s Vulnerable › Vulnerabilities

CVE-2021-3809

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-01 · updated 2026-06-17
• Weakness: CWE-269

Description

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: 01.12.00
• HP Elite Slice Firmware: 2.55
• HP Elite Slice G2 Firmware: 2.55
• HP Elite X2 1012 G2 Firmware: 1.41
• HP Elite X2 1013 G3 Firmware: 01.19.00
• HP Elite X2 G4 Firmware: 01.12.00
• HP Elitebook 1040 G4 Firmware: 1.41
• HP Elitebook 1050 G1 Firmware: 01.19.00
• HP Elitebook 725 G4 Firmware: 1.4
• HP Elitebook 735 G5 Firmware: 01.20.00
• HP Elitebook 735 G6 Firmware: 01.19.00
• HP Elitebook 745 G4 Firmware: 1.4
• HP Elitebook 745 G5 Firmware: 01.20.00
• HP Elitebook 745 G6 Firmware: 01.19.00
• HP Elitebook 755 G4 Firmware: 1.4
• HP Elitebook 755 G5 Firmware: 01.20.00
• HP Elitebook 820 G4 Firmware: 1.41
• HP Elitebook 828 G4 Firmware: 1.41
• HP Elitebook 830 G5 Firmware: 01.19.00
• HP Elitebook 830 G6 Firmware: 01.12.00
• HP Elitebook 836 G5 Firmware: 01.19.00
• HP Elitebook 836 G6 Firmware: 01.12.00
• HP Elitebook 840 G4 Firmware: 1.41
• HP Elitebook 840 G5 Firmware: 01.19.00
• HP Elitebook 840 G6 Firmware: 01.12.00
• HP Elitebook 840R G4 Firmware: 01.19.00
• HP Elitebook 846 G5 Firmware: 01.19.00
• HP Elitebook 848 G4 Firmware: 1.41
• HP Elitebook 850 G4 Firmware: 1.41
• HP Elitebook 850 G5 Firmware: 01.19.00

References

• https://support.hp.com/us-en/document/ish_6184733-6184761-16/hpsbhf03788
• https://support.hp.com/us-en/document/ish_6184733-6184761-16/hpsbhf03788

Get alerted when CVE-2021-3809 or the next vulnerability affects your stack