CVE-2018-6622

Name: CVE-2018-6622
Creator: NVD / NIST
Published: 2018-08-17T18:29:01.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.52%

Last modified Jun 17, 2026

CVE-2018-6622 is a vulnerability of currently unknown severity. An issue was discovered that affects all producers of BIOS firmware who make a certain realistic interpretation of an obscure portion of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2.0 specification. An abnormal case is not handled properly by this firmware while S3 sleep and can clear TPM 2.0. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

An issue was discovered that affects all producers of BIOS firmware who make a certain realistic interpretation of an obscure portion of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2.0 specification. An abnormal case is not handled properly by this firmware while S3 sleep and can clear TPM 2.0. It allows local users to overwrite static PCRs of TPM and neutralize the security features of it, such as seal/unseal and remote attestation.

Metrics

EPSS Probability

0.52%

40.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Trustedcomputinggroup	Trusted Platform Module	2.0

References

http://www.securityfocus.com/bid/105203Third Party Advisory, VDB Entry
https://www.usenix.org/conference/usenixsecurity18/presentation/hanThird Party Advisory
http://www.securityfocus.com/bid/105203Third Party Advisory, VDB Entry
https://www.usenix.org/conference/usenixsecurity18/presentation/hanThird Party Advisory

Timeline

Published: Aug 17, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6622?

How severe is CVE-2018-6622?

Severity scoring for CVE-2018-6622 is pending analysis. The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6622?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6622?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST