CVE-2026-22696
CriticalSummary
Vulnerability in dcap-qvl before version 0.3.9 involves skipping verification of the QE Identity signature and not enforcing policy constraints on the QE Report. An attacker can forge QE Identity data to whitelist a malicious or non-Intel Quoting Enclave, allowing them to sign untrusted quotes that the verifier accepts as valid.
Risk Assessment
It undermines the entire remote attestation security model, allowing an attacker to impersonate trusted enclaves and accept unauthorized quotes.
Recommendation
Update dcap-qvl to version 0.3.9 or later, which includes the fix.
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Original NVD description (English source)
dcap-qvl implements the quote verification logic for DCAP (Data Center Attestation Primitives). A vulnerability present in versions prior to 0.3.9 involves a critical gap in the cryptographic verification process within the dcap-qvl. The library fetches QE Identity collateral (including qe_identity, qe_identity_signature, and qe_identity_issuer_chain) from the PCCS. However, it skips to verify the QE Identity signature against its certificate chain and does not enforce policy constraints on the QE Report. An attacker can forge the QE Identity data to whitelist a malicious or non-Intel Quoting Enclave. This allows the attacker to forge the QE and sign untrusted quotes that the verifier will accept as valid. Effectively, this bypasses the entire remote attestation security model, as the verifier can no longer trust the entity responsible for signing the quotes. All deployments utilizing the dcap-qvl library for SGX or TDX quote verification are affected. The vulnerability has been patche

