Vulnerability · Published Oct 9, 2026 · Assigned by GitHub_M
CVE-2026-108268enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session
Critical 9.1
In plain English
A critical-severity security flaw in enclave-os-virtual from Privasys. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Privasys | enclave-os-virtual | < tdx-v0.2.43< tdx-gpu-v0.6.27 |
Weakness: CWE-346 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9 x_refsource_CONFIRM
- https://github.com/Privasys/enclave-os-virtual/commit/9a6be91e29f2b6738d0b77c33cd1ad5cd3d8a347 x_refsource_MISC
- https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-gpu-v0.6.27 x_refsource_MISC
- https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-v0.2.43 x_refsource_MISC
- https://privasys.org/blog/binding-attestation-to-the-tls-session x_refsource_MISC