High severity7.8NVD Advisory· Published Feb 1, 2023· Updated Jun 17, 2026

CVE-2021-3809

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

Microfocus/BIOSllm-create
Microfocus/UEFI firmwarellm-create
HP Inc./HP PC BIOSv5
Range: See HP Security Bulletin reference for affected versions.

Patches

Vulnerability mechanics

References

support.hp.com/us-en/document/ish_6184733-6184761-16/hpsbhf03788nvdVendor Advisory

News mentions

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