How severe is CVE-2020-8671?

CVE-2020-8671 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-8671 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8671?

CVE-2020-8671 affects Intel Bios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8671?

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

When was CVE-2020-8671 published?

CVE-2020-8671 was published on 2020-10-05 and last updated on 2026-06-17.

CVE-2020-8671

CVE-2020-8671 is a medium-severity vulnerability in Intel Bios with a CVSS 3.x base score of 5.5. 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 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Intel Bios
Published: 2020-10-05
Last modified: 2026-06-17

Description

Insufficient control flow management in BIOS firmware 8th, 9th Generation Intel(R) Core(TM) Processors and Intel(R) Celeron(R) Processor 4000 Series may allow an authenticated user to potentially enable information disclosure via local access.

Frequently asked questions

What is CVE-2020-8671?: Insufficient control flow management in BIOS firmware 8th, 9th Generation Intel(R) Core(TM) Processors and Intel(R) Celeron(R) Processor 4000 Series may allow an authenticated user to potentially enable information disclosure via local access.
How severe is CVE-2020-8671?: CVE-2020-8671 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-8671 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8671?: CVE-2020-8671 affects Intel Bios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8671?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8671 published?: CVE-2020-8671 was published on 2020-10-05 and last updated on 2026-06-17.

References

https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00356.html

Affected products (1)

cpe:2.3:o:intel:bios:-:*:*:*:*:*:*:*

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