What’s Vulnerable › Vulnerabilities

CVE-2021-39298

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-16 · updated 2026-10-07
• Weakness: CWE-269

Description

A potential vulnerability in AMD System Management Mode (SMM) interrupt handler may allow an attacker with high privileges to access the SMM resulting in arbitrary code execution which could be used by malicious actors to bypass security mechanisms provided in the UEFI firmware.

Affected products

• HP 260 G3 Desktop Mini Pc Firmware: through 2.17.00
• HP Elite Dragonfly Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elite Dragonfly G2 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elite Dragonfly Max Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elite X2 1013 G3 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elite X2 G4 Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elite X2 G8 Tablet Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 1050 G1 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 830 G5 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 830 G6 Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elitebook 830 G7 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 830 G8 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 836 G5 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 836 G6 Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elitebook 840 Aero G8 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 840 G5 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 840 G5 Healthcare Edition Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 840 G6 Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elitebook 840 G6 Healthcare Edition Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elitebook 840 G7 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 840 G8 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 840R G4 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 846 G5 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 850 G5 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook 850 G6 Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elitebook 850 G7 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook 850 G8 Firmware: before 01.08.00 — fixed in 01.08.00
• HP Elitebook X360 1030 G3 Firmware: before 01.19.00 — fixed in 01.19.00
• HP Elitebook X360 1030 G4 Firmware: before 01.12.00 — fixed in 01.12.00
• HP Elitebook X360 1030 G7 Firmware: before 01.08.00 — fixed in 01.08.00

How to fix

Upgrade to a fixed version: HP Elite Dragonfly Firmware 01.12.00; HP Elite Dragonfly G2 Firmware 01.08.00; HP Elite Dragonfly Max Firmware 01.08.00; HP Elite X2 1013 G3 Firmware 01.19.00; HP Elite X2 G4 Firmware 01.12.00; HP Elite X2 G8 Tablet Firmware 01.08.00; HP Elitebook 1050 G1 Firmware 01.19.00; HP Elitebook 830 G5 Firmware 01.19.00; HP Elitebook 830 G6 Firmware 01.12.00; HP Elitebook 830 G7 Firmware 01.08.00; HP Elitebook 830 G8 Firmware 01.08.00; HP Elitebook 836 G5 Firmware 01.19.00. Check the vendor advisory for mitigations.

References

• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1027
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1027
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032

Get alerted when CVE-2021-39298 or the next vulnerability affects your stack