CVE-2021-33124

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow...

6.7 Medium

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation 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: High
Integrity: High
Availability: High

Exploit likelihood

0.26%Down 0.6 points since May 13, 2022

What each source reports

NVD Score used 6.7

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Record: CVE-2021-33124
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-787
Updated: 2026-11-02

CVE List 6.7

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Record: CVE-2021-33124
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

EUVDEUVD-2021-19839 6.7

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Record: EUVD-2021-19839
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-g639-f2rm-mp66 6.7

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow...

Out-of-bounds write in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user to potentially enable aescalation of privilege via local access.

Record: GHSA-g639-f2rm-mp66
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-787
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-2021-33124 is a medium vulnerability (CVSS 6.7) in Intel Core I3-1000g1 Firmware, published May 12, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 18th 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