Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://trustedcomputinggroup.org/about/security/
- https://trustedcomputinggroup.org/wp-content/uploads/Extended-vrt0010-11-guidanc
- https://trustedcomputinggroup.org/wp-content/uploads/VRT0011-Advisory_Final-1.pd
FAQ
What is CVE-2026-6727?
CVE-2026-6727 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 ...
How severe is CVE-2026-6727?
CVE-2026-6727 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-6727?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.