Critical severity · published Oct 9, 2026
CVE-2026-108268
enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session
9.1
CVSS
0.1%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EN
enclave-os-virtual · Privasys
< tdx-v0.2.43; < tdx-gpu-v0.6.27 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-108268
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-108268
x_refsource_CONFIRM
https://github.com/Privasys/enclave-os-virtual/security/advisories/GHSA-p5fp-g94g-g9m9
x_refsource_MISC
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
