CVE-2026-6727 (GCVE-0-2026-6727)

Vulnerability from cvelistv5 – Published: 2026-08-11 15:22 – Updated: 2026-08-12 18:41
VLAI
Title
CVE-2026-6727
Summary
A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.
Severity
5.9 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 18:41 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
Trusted Computing Group TPM2.0 Affected: 0 , ≤ v184 (custom)
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Show details on NVD website
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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