---
id: CVE-2026-108268
title: >-
  Enclave OS Virtual runs container workloads inside confidential virtual
  machines with end-to-end attestation
summary: >-
  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 clie…
severity: critical
cvss: 9.1
cvssVector: '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'
cwe:
  - CWE-346
vendor: Privasys
product: enclave-os-virtual
affected:
  - enclave-os-virtual < tdx-v0.2.43
  - enclave-os-virtual < tdx-gpu-v0.6.27
published: '2026-10-09'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T20:04:29.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108268'
references:
  - url: >-
      https://github.com/Privasys/enclave-os-virtual/commit/9a6be91e29f2b6738d0b77c33cd1ad5cd3d8a347
    label: security-advisories@github.com
  - url: >-
      https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-gpu-v0.6.27
    label: security-advisories@github.com
  - url: 'https://github.com/Privasys/enclave-os-virtual/releases/tag/tdx-v0.2.43'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9
    label: security-advisories@github.com
  - url: 'https://privasys.org/blog/binding-attestation-to-the-tls-session'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00128
epssPercentile: 0.02452
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-13T11:29:30.644389Z'
cvssSource: cna
ingestedAt: '2026-10-09T23:16:19.788Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.