Several security flaws have been reported in the Trusted Computing Group’s (TCG) TPM 2.0 reference code, including memory bugs disclosed in 2023 and 2025 and information-leakage issues disclosed in 2026. That does not mean every TPM 2.0 device is vulnerable: TPM 2.0 covers a specification, reference code, and many vendor implementations. To assess a particular PC, follow the PC, motherboard, or TPM vendor’s security guidance for the installed implementation and firmware.
What the TPM 2.0 disclosures do—and do not—show
TPM 2.0 is not one chip or a single software package. The Trusted Computing Group maintains the TPM 2.0 Library specification and publishes reference code, while manufacturers build their own TPM implementations. TPMs may be discrete chips, integrated hardware, firmware-based, or software-based in cloud and virtualized environments. A finding in reference code therefore does not establish that every product implementing TPM 2.0 has the same defect.
The phrase “TPM 2.0 spec flaw” can also blur an important distinction. The disclosures discussed here concern reference code or implementations; they should not be treated as proof that all TPM 2.0 devices share a defect in the normative specification. TCG’s catalog listed Library Specification Version 185, dated March 2026, as its latest version when reviewed, alongside errata for earlier branches. A newer specification version alone does not tell an owner which code or firmware is running, or whether a particular device has been fixed.
Reported vulnerabilities, by disclosure
The disclosures involve different bug classes, access conditions, and potential effects. The table summarizes what CERT/CC and TCG describe; possible consequences depend on the affected implementation and exploitation conditions.
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| Disclosure | Issue and affected code | Access and potential impact | Guidance |
|---|---|---|---|
| 2023: CVE-2023-1017 and CVE-2023-1018 | Out-of-bounds write and out-of-bounds read in TPM 2.0 reference-library handling of command parameters, including the CryptParameterDecryption function. CERT/CC VU#782720 was first released February 28, 2023, and revised July 8, 2025. | A maliciously crafted command sent through an accessible TPM command interface could expose sensitive data or overwrite normally protected TPM data, potentially including cryptographic keys. The specific outcome depends on the issue and implementation. | TCG advisory VRT0007 maps the flaws to errata for specification revision branches 1.59, 1.38, and 1.16. This mapping is not confirmation that a device received a vendor firmware fix. |
| 2025: CVE-2025-2884 | Out-of-bounds read in the reference implementation. TCG published advisory VRT0009 on June 10, 2025. | CERT/CC says an authenticated local attacker with access to a vulnerable TPM interface could cause information disclosure or denial of service. | VRT0009 gives errata thresholds for specification branches 1.83, 1.59, and 1.38. |
| 2026: CVE-2026-6726 and CVE-2026-6727 | Information leakage involving falsified TPM keys and a timing side channel in RSA OAEP decryption in TCG reference code. CERT/CC VU#431093 was released August 11, 2026, and revised August 12, 2026. | The described attack requires privileged access to the TPM command interface. Depending on conditions, an attacker may obtain credentials for falsified keys or recover information that permits decryption of ciphertext encrypted to affected TPM-managed RSA keys, including the RSA Endorsement Key. CERT/CC also notes that forged TPM attestations may be possible under some conditions. | TCG lists VRT0010 and VRT0011 for the 2026 issues. Consult the relevant vendor’s response and remediation guidance for the implementation in use. |
Why these reports do not mean every TPM-equipped PC is remotely exposed
The reported outcomes are conditional, not a claim that an attacker can remotely take over any computer with a TPM. The 2023 and 2025 descriptions involve a command interface, and the 2025 note specifies an authenticated local attacker. CERT/CC says the 2026 attacks require privileged access to the TPM command interface. Whether a product is affected, and what an attacker could achieve, depends on its implementation and the conditions for accessing that interface.
TCG coordinates vulnerability disclosure and publishes advisories, but the affected product’s maker is the authority on its own implementation and firmware. TCG’s vulnerability process covers triage, remediation determination, communication, mitigation, and response; it also advises reporters to contact the response team for the vendor whose implementation contains the issue.
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How to check and respond on your device
- Identify the TPM and platform maker. Determine whether the TPM is supplied by the PC manufacturer, motherboard maker, or another vendor, and identify the relevant product or platform. TPM 2.0 alone is not enough to determine exposure.
- Check the vendor’s security notices. Search the manufacturer’s support or security pages for the specific CVE numbers in the table and for guidance covering your model or TPM implementation. Use the vendor’s stated firmware and version information to decide whether its notice applies.
- Follow the supported remediation instructions. If the vendor provides an applicable firmware update or other mitigation, use its instructions and supported update process. TCG’s errata identify version-specific branches, but do not establish that an endpoint has received a firmware fix.
- Ask the vendor if applicability is unclear. Provide the system or TPM model and firmware information requested by the vendor. Do not infer that a device is vulnerable—or fixed—from the TPM 2.0 label or from the latest specification number alone.
TCG explains that TPM firmware can provide cryptographic evidence that firmware is an expected version, and that correcting an implementation bug may require updated TPM firmware on affected endpoints. Availability and delivery of such an update depend on the responsible vendor and product. Do not attempt an unrelated errata change, install firmware intended for another model, or replace a TPM without product-specific guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What is not established about the scale of exposure
The cited advisories describe vulnerability classes and remediation guidance; they do not establish how many deployed devices are affected or provide an incident rate. The presence of multiple disclosures is a reason to check the relevant vendor’s notices, not evidence that a particular PC is vulnerable. No prevalence estimate should be inferred from the number of CVEs or from the number of specification revisions.
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