CVE-2022-21198

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may...

7.9 High

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: High

Exploit likelihood

0.15%Down 0.7 points since Nov 12, 2022

What each source reports

CVE List Score used 7.9

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Record: CVE-2022-21198
CVSS 3.1: 7.9 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Weakness: CWE-367
Updated: 2026-11-02

EUVDEUVD-2022-26432 7.9

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Record: EUVD-2022-26432
CVSS 3.1: 7.9 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-hjmc-mw59-wqqp 6.4

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may...

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Record: GHSA-hjmc-mw59-wqqp
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-367
Updated: 2026-11-02

NVD 7.9

Time-of-check time-of-use race condition in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Record: CVE-2022-21198
CVSS 3.1: 7.9 HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-367
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-21198 is a high vulnerability (CVSS 7.9) in Intel Celeron 1000m Firmware, published November 11, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. No source names a fixed version.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

History

In short

References