CVE-2021-33123

CVE-2021-33123 is a high-severity vulnerability in Intel Xeon Bronze 3206r Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• CVSS v2: 7.2
• EPSS exploit prediction: 0% (17th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Intel Xeon Bronze 3206r Firmware
• Published: 2022-05-12
• Last modified: 2026-06-17

Description

Improper access control 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-2021-33123?

Improper access control 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-2021-33123?

CVE-2021-33123 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-33123 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33123?

CVE-2021-33123 primarily affects Intel Xeon Bronze 3206r Firmware. In total, 673 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-33123?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-33123 published?

CVE-2021-33123 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 (673)

• cpe:2.3:o:intel:xeon_bronze_3206r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5218r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5220r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6208u_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6226r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6230r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6238r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6240r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6242r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6246r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6248r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6250_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6250l_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6256_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6258r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_silver_4210r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_silver_4210t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_silver_4214r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_silver_4215r_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_platinum_9221_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_platinum_9222_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_bronze_3204_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5215_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5215l_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5217_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5218_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5218b_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5218n_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5218t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5220_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5220s_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5220t_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_5222_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6209u_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6210u_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6212u_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6222v_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6226_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6230_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:intel:xeon_gold_6230n_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Intel Xeon Bronze 3206r Firmware

• CVE-2022-26343 — High (CVSS 8.2): Improper access control in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially…
• 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-2021-0159 — High (CVSS 7.8): Improper input validation in the BIOS authenticated code module for some Intel(R) Processors may allow a privileged…
• 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…
• CVE-2021-0116 — High (CVSS 7.8): Out-of-bounds write in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable an…

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