How severe is CVE-2020-12377?

CVE-2020-12377 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-2020-12377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12377?

CVE-2020-12377 affects Intel Bmc Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12377?

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-2020-12377 published?

CVE-2020-12377 was published on 2021-02-17 and last updated on 2026-06-17.

CVE-2020-12377

CVE-2020-12377 is a high-severity vulnerability in Intel Bmc 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Intel Bmc Firmware
Published: 2021-02-17
Last modified: 2026-06-17

Description

Insufficient input validation in the BMC firmware for some Intel(R) Server Boards, Server Systems and Compute Modules before version 2.47 may allow an authenticated user to potentially enable escalation of privilege via local access.

Frequently asked questions

What is CVE-2020-12377?: Insufficient input validation in the BMC firmware for some Intel(R) Server Boards, Server Systems and Compute Modules before version 2.47 may allow an authenticated user to potentially enable escalation of privilege via local access.
How severe is CVE-2020-12377?: CVE-2020-12377 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-2020-12377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12377?: CVE-2020-12377 affects Intel Bmc Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12377?: 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-2020-12377 published?: CVE-2020-12377 was published on 2021-02-17 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00434.html

Affected products (1)

cpe:2.3:o:intel:bmc_firmware:*:*:*:*:*:*:*:*

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