How severe is CVE-2021-0093?

CVE-2021-0093 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-0093 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0093?

CVE-2021-0093 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-2021-0093?

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

When was CVE-2021-0093 published?

CVE-2021-0093 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-0093

CVE-2021-0093 is a medium-severity vulnerability in Intel Atom C3308 with a CVSS 3.x base score of 4.4. 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-276.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 2.1
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Intel Atom C3308
Published: 2022-02-09
Last modified: 2026-06-17

Description

Incorrect default permissions in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable a denial of service via local access.

Frequently asked questions

What is CVE-2021-0093?: Incorrect default permissions in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable a denial of service via local access.
How severe is CVE-2021-0093?: CVE-2021-0093 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-0093 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0093?: CVE-2021-0093 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-2021-0093?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0093 published?: CVE-2021-0093 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:-:*:*:*:*:*:*:*

More vulnerabilities in Intel Atom C3308

CVE-2021-0099 — High (CVSS 7.8): Insufficient control flow management in the firmware for some Intel(R) Processors may allow an authenticated user to…
CVE-2021-0091 — High (CVSS 7.8): Improper access control in the firmware for some Intel(R) Processors may allow an unauthenticated user to potentially…
CVE-2021-33150 — Medium (CVSS 6.8): Hardware allows activation of test or debug logic at runtime for some Intel(R) Trace Hub instances which may allow an…
CVE-2021-0115 — Medium (CVSS 6.7): Buffer overflow in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable…
CVE-2021-0111 — Medium (CVSS 6.7): NULL pointer dereference in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable…
CVE-2021-0107 — Medium (CVSS 6.7): Unchecked return value in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable…

All CVEs affecting Intel Atom C3308 →

Other CWE-276 (Incorrect Default Permissions) vulnerabilities

CVE-2022-42150 — Critical (CVSS 10.0): TinyLab linux-lab v1.1-rc1 and cloud-labv0.8-rc2, v1.1-rc1 are vulnerable to insecure permissions. The default…
CVE-2020-29492 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2020-29491 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2025-40585 — Critical (CVSS 9.9): A vulnerability has been identified in Energy Services (All versions with G5DFR). Affected solutions using G5DFR…
CVE-2019-19896 — Critical (CVSS 9.9): In IXP EasyInstall 6.2.13723, there is Remote Code Execution via weak permissions on the Engine Service share. The…
CVE-2020-37129 — Critical (CVSS 9.8): Memu Play 7.1.3 contains an insecure folder permissions vulnerability that allows low-privileged users to modify the…

Browse all CWE-276 (Incorrect Default Permissions) vulnerabilities →