CVE-2021-0099

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an...

7.8 High

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.30%Down 0.6 points since Feb 10, 2022

What each source reports

NVD Score used 7.8

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

Record: CVE-2021-0099
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List 7.8

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

Record: CVE-2021-0099
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

EUVDEUVD-2021-2718 7.8

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

Record: EUVD-2021-2718
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5vrx-rpgj-wc4j 7.8

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an...

Insufficient control flow management in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable an escalation of privilege via local access.

Record: GHSA-5vrx-rpgj-wc4j
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-269
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-2021-0099 is a high vulnerability (CVSS 7.8) in Intel Atom C3308, published February 9, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 22nd 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