How severe is CVE-2020-0566?

CVE-2020-0566 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-0566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-0566?

CVE-2020-0566 affects Intel Trusted Execution Engine Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-0566?

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

When was CVE-2020-0566 published?

CVE-2020-0566 was published on 2020-06-15 and last updated on 2026-06-17.

CVE-2020-0566

CVE-2020-0566 is a medium-severity vulnerability in Intel Trusted Execution Engine Firmware with a CVSS 3.x base score of 6.8. 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 6.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Intel Trusted Execution Engine Firmware
Published: 2020-06-15
Last modified: 2026-06-17

Description

Improper Access Control in subsystem for Intel(R) TXE versions before 3.175 and 4.0.25 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

Frequently asked questions

What is CVE-2020-0566?: Improper Access Control in subsystem for Intel(R) TXE versions before 3.175 and 4.0.25 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.
How severe is CVE-2020-0566?: CVE-2020-0566 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-0566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-0566?: CVE-2020-0566 affects Intel Trusted Execution Engine Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-0566?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-0566 published?: CVE-2020-0566 was published on 2020-06-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:intel:trusted_execution_engine_firmware:*:*:*:*:*:*:*:*

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