CVE-2026-108268: Enclave OS Virtual RA-TLS quote relay in attestation

CVE-2026-108268 · Severity: info · Published 2026-10-09

Enclave OS Virtual is a system that runs container workloads inside secure Intel TDX virtual machines with attestation mechanisms to verify their authenticity. An attacker who obtained a TLS private key from an enclave could forge attestation quotes and trick relying parties into accepting forged connections as legitimate, potentially exposing sensitive data or enabling man-in-the-middle attacks on encrypted communications.

Vendors: Privasys.

Quick answers

Is CVE-2026-108268 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-108268 being exploited in the wild.
How severe is CVE-2026-108268?
Informational severity, published 9 October 2026.
Which products and versions are affected?
Privasys Enclave OS Virtual before tdx-v0.2.43 and tdx-gpu-v0.6.27.
Is there a fix for CVE-2026-108268?
Yes: fixed in tdx-v0.2.43, tdx-gpu-v0.6.27. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-108268 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-108268?
Check whether you run Privasys Enclave OS Virtual at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: tdx-v0.2.43, tdx-gpu-v0.6.27

Technical details

A flaw in the RA-TLS (Remote Attestation TLS) certificate issuer's quote generation failed to bind the attestation quote to the active TLS session; the ReportData field contained only the certificate public-key hash and client nonce, omitting the TLS session channel binder. An attacker with an enclave's TLS private key could relay a genuine attestation quote to another connection, bypassing session binding verification. The fix adds channel-binding material to the quote's report_data field, causing replayed quotes to fail binder validation.

Affected products

  • Privasys Enclave OS Virtual before tdx-v0.2.43 and tdx-gpu-v0.6.27

Timeline

  • 2026-10-09: disclosed

References

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