CVE-2026-108268 enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session
Attackers can bypass remote attestation in Enclave OS Virtual by relaying quotes, allowing them to impersonate attested enclaves.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108268?
CVE-2026-108268 is a critical vulnerability in Privasys enclave-os-virtual, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-346
Which versions are affected by CVE-2026-108268?
How do I fix CVE-2026-108268?
No fix has been published for CVE-2026-108268 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-108268 being exploited?
There is no known exploitation of CVE-2026-108268 in the wild and no public exploit code.
Sources
Also known as GHSA-p5fp-g94g-g9m9.