How severe is CVE-2018-6622?

High severity. CVSS v3 base score is 7.1 out of 10.

Is CVE-2018-6622 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Trustedcomputinggroup Trusted Platform Module

CVE-2018-6622

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.

EPSS: 0.005 (41.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Trustedcomputinggroup Trusted_platform_module — versions 2.0
N/a — versions n/a

Public proof-of-concept exploits

References

cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-6622?: CVE-2018-6622 is a high-severity vulnerability in Trustedcomputinggroup Trusted Platform Module. CVSS score: 7.1/10. Published 2018-08-17.
How severe is CVE-2018-6622?: High severity. CVSS v3 base score is 7.1 out of 10.
Is CVE-2018-6622 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.