CVE-2026-108265: Enclave OS Mini RA-TLS quote relay in SGX enclaves

CVE-2026-108265 · Severity: info · Published 2026-10-09

Enclave OS Mini is a Rust-based runtime that allows applications to run securely inside Intel SGX enclaves, which are isolated processing environments used for sensitive computations. A flaw in its TLS certificate validation allowed an attacker who obtained a TLS private key to replay a legitimate security proof (quote) to fake a connection as the attested enclave, bypassing the intended security guarantees. This could allow an attacker to impersonate a secure enclave to systems relying on its attestation.

Vendors: Privasys.

Quick answers

Is CVE-2026-108265 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-108265 being exploited in the wild.
How severe is CVE-2026-108265?
Informational severity, published 9 October 2026.
Which products and versions are affected?
Privasys Enclave OS Mini before wasm-v0.40.0.
Is there a fix for CVE-2026-108265?
Yes: fixed in wasm-v0.40.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-108265 attacked?
It is attacked over the network.
Am I affected by CVE-2026-108265?
Check whether you run Privasys Enclave OS Mini 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: wasm-v0.40.0

Technical details

The RA-TLS challenge certificate path failed to include a session-binding value in the SGX quote's ReportData field, only including the certificate public-key hash and client nonce. An attacker who obtained the enclave's TLS private key could relay a genuine quote to a different connection, causing a relying party to accept an attacker-controlled TLS termination as coming from the attested enclave. The fix adds channel binding by committing a 32-byte binder derived from the TLS handshake key schedule to the quote's ReportData, verified post-handshake by the verifier.

Affected products

  • Privasys Enclave OS Mini before wasm-v0.40.0

Timeline

  • 2026-07-10: patched: Fix commit implementing channel binding
  • 2026-10-09: advisory
  • 2026-10-09: disclosed

References

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