What’s Vulnerable › Vulnerabilities

CVE-2026-108268: enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session

• Severity: critical (CVSS 9.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-09 · updated 2026-10-16
• Weakness: CWE-346

Description

Enclave OS Virtual runs container workloads inside confidential virtual machines with end-to-end attestation. Prior to tdx-v0.2.43 and tdx-gpu-v0.6.27, the TDX/GPU RA-TLS certificate issuer placed the certificate public-key hash and client nonce in quote ReportData but omitted a value bound to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in tdx-v0.2.43 and tdx-gpu-v0.6.27.

Affected products

• Privasys enclave-os-virtual: before tdx-v0.2.43; before tdx-gpu-v0.6.27

References

• https://github.com/Privasys/enclave-os-virtual/commit/9a6be91e29f2b6738d0b77c33cd1ad5cd3d8a347
• https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-gpu-v0.6.27
• https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-v0.2.43
• https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9
• https://privasys.org/blog/binding-attestation-to-the-tls-session

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