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.
History

Thu, 13 Aug 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Trustedcomputinggroup
Trustedcomputinggroup tpm2.0
Vendors & Products Trustedcomputinggroup
Trustedcomputinggroup tpm2.0

Thu, 13 Aug 2026 03:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1023

Wed, 12 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-208
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 23:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1023

Tue, 11 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
Description 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.
Title CVE-2026-6727
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published: 2026-08-11T15:22:18.547Z

Updated: 2026-08-12T18:41:28.456Z

Reserved: 2026-04-20T21:18:19.891Z

Link: CVE-2026-6727

cve-icon Vulnrichment

Updated: 2026-08-12T18:41:15.556Z

cve-icon NVD

Status : Received

Published: 2026-08-11T16:17:34.503

Modified: 2026-08-12T19:17:54.567

Link: CVE-2026-6727

cve-icon Redhat

No data.