How severe is CVE-2020-12355?

CVE-2020-12355 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-2020-12355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12355?

CVE-2020-12355 affects Intel Trusted Execution Engine. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12355?

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

When was CVE-2020-12355 published?

CVE-2020-12355 was published on 2020-11-12 and last updated on 2026-06-17.

CVE-2020-12355

CVE-2020-12355 is a medium-severity vulnerability in Intel Trusted Execution Engine 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. The underlying weakness is classified as CWE-294.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Intel Trusted Execution Engine
Published: 2020-11-12
Last modified: 2026-06-17

Description

Authentication bypass by capture-replay in RPMB protocol message authentication subsystem in Intel(R) TXE versions before 4.0.30 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.

Frequently asked questions

What is CVE-2020-12355?: Authentication bypass by capture-replay in RPMB protocol message authentication subsystem in Intel(R) TXE versions before 4.0.30 may allow an unauthenticated user to potentially enable escalation of privilege via physical access.
How severe is CVE-2020-12355?: CVE-2020-12355 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-2020-12355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12355?: CVE-2020-12355 affects Intel Trusted Execution Engine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12355 published?: CVE-2020-12355 was published on 2020-11-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:intel:trusted_execution_engine:*:*:*:*:*:*:*:*

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