Is CVE-2020-12355 in the CISA KEV catalog?

No. CVE-2020-12355 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-12355?

CVE-2020-12355 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2020-12355?

CVE-2020-12355 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-12355?

Upgrade trusted execution engine to 4.0.30 or later.

CVE & CISA-KEV Catalog

CVE-2020-12355

MEDIUM

6.8

CVSS v3

NVD

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.

CWE-294

How to fix

Remediation Available

trusted execution engineNVD

Affected:< 4.0.30Fixed in:4.0.30CVE-2020-12355derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Vendor Advisory1

intel.com

Third-Party Advisory1

security.netapp.com

Other references1

kb.cert.org

Related Vulnerabilities

Other CWE-294 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-23397	Critical	9.8	97%	KEV	Fix
CVE-2017-3191	Critical	9.8	63%	-	-
CVE-2023-49231	Critical	9.8	43%	-	-
CVE-2002-0054	High	7.5	22%	-	-
CVE-2022-22806	Critical	9.8	12%	-	-
CVE-2022-29593	Medium	5.9	10%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.