How severe is CVE-2020-12357?

CVE-2020-12357 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-2020-12357 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12357?

CVE-2020-12357 primarily affects Intel Bios. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12357?

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

When was CVE-2020-12357 published?

CVE-2020-12357 was published on 2021-06-09 and last updated on 2026-06-17.

CVE-2020-12357

CVE-2020-12357 is a medium-severity vulnerability in Intel Bios 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-665.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 4.6
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Intel Bios
Published: 2021-06-09
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2020-12357?: Improper initialization in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.
How severe is CVE-2020-12357?: CVE-2020-12357 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-2020-12357 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12357?: CVE-2020-12357 primarily affects Intel Bios. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12357 published?: CVE-2020-12357 was published on 2021-06-09 and last updated on 2026-06-17.

References

Affected products (19)

cpe:2.3:o:intel:bios:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:aff_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:e-series_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fas_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_compute_node_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_storage_node_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:solidfire_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc427e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc477e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc477e_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc547g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc627e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc647e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc677e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc847e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_itp1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cpu_1518-4_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Bios

CVE-2019-14557 — High (CVSS 8.0): Buffer overflow in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 &…
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CVE-2020-8672 — High (CVSS 7.8): Out of bound read in BIOS firmware for 8th, 9th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 Series…
CVE-2020-8739 — High (CVSS 7.8): Use of potentially dangerous function in Intel BIOS platform sample code for some Intel(R) Processors may allow an…
CVE-2018-3612 — High (CVSS 7.8): Intel NUC kits with insufficient input validation in system firmware, potentially allows a local attacker to elevate…
CVE-2008-7096 — Medium (CVSS 6.9): Intel Desktop and Intel Mobile Boards with BIOS firmware DQ35JO, DQ35MP, DP35DP, DG33FB, DG33BU, DG33TL, MGM965TW,…

All CVEs affecting Intel Bios →

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