CVE-2021-33103

CVE-2021-33103 is a medium-severity vulnerability in Intel Xeon E-2386g Firmware 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.

Key facts

• Severity: Medium (CVSS 3.x base score 6.7)
• CVSS v2: 7.2
• EPSS exploit prediction: 0% (16th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Intel Xeon E-2386g Firmware
• Published: 2022-05-12
• Last modified: 2026-06-17

Description

Unintended intermediary 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.

Frequently asked questions

What is CVE-2021-33103?

Unintended intermediary 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.

How severe is CVE-2021-33103?

CVE-2021-33103 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-2021-33103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33103?

CVE-2021-33103 primarily affects Intel Xeon E-2386g Firmware. In total, 193 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-33103?

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

When was CVE-2021-33103 published?

CVE-2021-33103 was published on 2022-05-12 and last updated on 2026-06-17.

References

• https://security.netapp.com/advisory/ntap-20220818-0003/
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00601.html

Affected products (193)

• cpe:2.3:o:intel:xeon_e-2386g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2374g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2314_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2334_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2356g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2378_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2324g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2378g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2336_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_e-2388g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1350_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1370_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1370p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1390_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1390p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1390t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_w-1350p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-1000g1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-1000g4_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-1005g1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10100_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10100e_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10100f_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10100t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10100te_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10100y_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10105_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10105f_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10105t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10110u_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10110y_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10300_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10300t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10305_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10305t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10320_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-10325_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-11100he_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-1110g4_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:core_i3-1115g4_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Intel Xeon E-2386g Firmware

• CVE-2021-33123 — High (CVSS 7.8): Improper access control in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged user…
• CVE-2021-33122 — High (CVSS 7.8): Insufficient control flow management in the BIOS firmware for some Intel(R) Processors may allow a privileged user to…
• CVE-2021-0189 — High (CVSS 7.8): Use of out-of-range pointer offset in the BIOS firmware for some Intel(R) Processors may allow a privileged user to…
• CVE-2021-0154 — High (CVSS 7.8): Improper input validation in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially…
• CVE-2021-0156 — High (CVSS 7.8): Improper input validation in the firmware for some Intel(R) Processors may allow an authenticated user to potentially…
• CVE-2021-0117 — High (CVSS 7.8): Pointer issues in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an…

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