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High · 7.9 CVE-2026-6726 EUVD-2026-56224GHSA-72rq-994p-w2hw

An information leakage vulnerability in the TCG TPM 2.0 reference code.

Published Aug 11, 2026 · Updated Aug 12, 2026 · Assigned by certcc

Description

An information leakage vulnerability was reported in the TCG TPM 2.0 reference code that could allow a local attacker with elevated privileges to obtain a credential from a TPM-aware CA for a falsified TPM key (such as an Attestation Key, DevID Key or TLS authentication key) and falsify other TPM 2.0 attestations with this key. See also TCG VRT0010.

Affected products

VendorProductAffectedFixed
Trusted Computing Group TPM2.0 ≤ v184 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 libtpms 0.9.1-1 —
Debian 13 libtpms 0.9.1-1 —
Debian 12 libtpms 0.9.1-1 —

Advisories 4

References