CVE-2021-39298

HIGH
8.8
CVSS Score
Published: February 16, 2022 at 04:38 PM UTC
Updated: October 7, 2026 at 07:17 PM UTC
191 products affected across 2 vendorsElitebook 840 G6 FirmwareElitebook 850 G6 FirmwareProbook 640 G5 Firmware· also runs on 187 platforms

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.17.00*
hp-260-g3-desktop-mini-pc (same device)
v < 01.12.00*
Affected range stops below 1.12.00, so it looks safe — our inference, not a vendor statement
hp-elite-dragonfly (same device)
v < 01.08.00*
Affected range stops below 1.08.00, so it looks safe — our inference, not a vendor statement
hp-elite-dragonfly-g2 (same device)
v < 01.19.00*
Affected range stops below 1.19.00, so it looks safe — our inference, not a vendor statement
hp-elite-x2-1013-g3 (same device)
v < 01.12.00*
Affected range stops below 1.12.00, so it looks safe — our inference, not a vendor statement
hp-elite-x2-g4 (same device)
v < 01.08.00*
Affected range stops below 1.08.00, so it looks safe — our inference, not a vendor statement
hp-elite-x2-g8-tablet (same device)
v < 01.19.00*
Affected range stops below 1.19.00, so it looks safe — our inference, not a vendor statement
hp-elitebook-1050-g1 (same device)
v < 01.19.00*
Affected range stops below 1.19.00, so it looks safe — our inference, not a vendor statement
hp-elitebook-830-g5 (same device)
v < 01.12.00*
Affected range stops below 1.12.00, so it looks safe — our inference, not a vendor statement
hp-elitebook-830-g6 (same device)
v < 01.08.00*
Affected range stops below 1.08.00, so it looks safe — our inference, not a vendor statement
hp-elitebook-830-g7 (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-269

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