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CVE-2026-6727 is a timing side-channel vulnerability in the RSA OAEP decryption implementation used by the TPM 2.0 reference implementation and associated Windows TPM ecosystem exposure. The flaw arises from observable timing differences during OAEP decryption operations. A privileged local attacker with access to the TPM command interface may be able to measure those differences and recover information about TPM-managed RSA decryption operations. Affected material can include ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key, as well as TPM-related import blobs, credential blobs, and session salts. Under certain conditions, the weakness may also undermine the integrity of TPM 2.0 attestation flows by enabling attestation forgery.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity TPM 2.0/fTPM reference-code timing side-channel vulnerability that can leak secrets from the TPM by measuring response-time differences during RSA-OAEP padding-related operations.
A non-Microsoft CVE republished in Microsoft's August 2026 release and tagged as a Windows TPM issue by MITRE.
An information disclosure vulnerability in the TPM 2.0 reference implementation.
A non-Microsoft Windows TPM vulnerability republished by Microsoft; FAQs are available, while the content indicates no workarounds and no mitigations.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.