CVE-2021-39300 Privilege escalation in BUSINESS NOTEBOOK PCS BIOS; BUSINESS DESKTOP PCS BIOS; RETAIL POINT-OF-SALE SYSTEMS BIOS; WORKSTATIONS BIOS

High 7.3 Published 16 Feb 2022 Updated 7 Oct 2026

Attackers can escalate privileges and execute arbitrary code via vulnerabilities in HP PC UEFI firmware, requiring firmware updates.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-39300?

CVE-2021-39300 is a high-severity vulnerability in BUSINESS NOTEBOOK PCS BIOS; BUSINESS DESKTOP PCS BIOS; RETAIL POINT-OF-SALE SYSTEMS BIOS; WORKSTATIONS BIOS, published on 16 Feb 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Potential vulnerabilities have been identified in UEFI firmware (BIOS) for some PC products which may allow escalation of privilege and arbitrary code execution.

Weakness: CWE-269

Which versions are affected by CVE-2021-39300?

It affects 187 products.

Products include Hp 260 G3 Desktop Mini Pc Firmware, Hp Elite Dragonfly Firmware, Hp Elite Dragonfly G2 Firmware, Hp Elite Dragonfly Max Firmware, Hp Elite X2 1013 G3 Firmware, Hp Elite X2 G4 Firmware and 181 more.

How do I fix CVE-2021-39300?

No fix has been published for CVE-2021-39300 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-39300 being exploited?

There is no known exploitation of CVE-2021-39300 in the wild and no public exploit code.

Sources

Also known as GHSA-mrxw-5mv6-xrf2.