How severe is CVE-2021-0111?

CVE-2021-0111 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-0111 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0111?

CVE-2021-0111 primarily affects Intel Atom C3308. In total, 681 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-0111?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-0111 published?

CVE-2021-0111 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-0111

CVE-2021-0111 is a medium-severity vulnerability in Intel Atom C3308 with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 4.6
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Intel Atom C3308
Published: 2022-02-09
Last modified: 2026-06-17

Description

NULL pointer dereference in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privilege via local access.

Frequently asked questions

What is CVE-2021-0111?: NULL pointer dereference in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an escalation of privilege via local access.
How severe is CVE-2021-0111?: CVE-2021-0111 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-0111 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0111?: CVE-2021-0111 primarily affects Intel Atom C3308. In total, 681 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-0111?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0111 published?: CVE-2021-0111 was published on 2022-02-09 and last updated on 2026-06-17.

References

Affected products (681)

cpe:2.3:h:intel:atom_c3308:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3336:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3338:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3338r:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3436l:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3508:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3538:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3558:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3558r:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3708:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3750:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3758:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3758r:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3808:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3830:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3850:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3858:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3950:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3955:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c3958:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-1000g1:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-1000g4:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-1005g1:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10100:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10100e:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10100f:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10100t:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10100te:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10100y:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10105:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10105f:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10105t:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10110u:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10110y:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10300:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10300t:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10305:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10305t:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10320:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i3-10325:-:*:*:*:*:*:*:*

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