CVE-2026-112377CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack
Updated under an hour ago ()
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CCC Attestation SIG attested-tls-poc through commit 731ca82 fails to bind early attestation Evidence to the TLS connection, allowing attackers to relay valid Evidence from a genuine attester. Attackers holding an extracted attested TLS private key can forward the relying party's nonce to a genuine attester and replay its Evidence to impersonate the attested workload and intercept data.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-346
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 20, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
CCC-Attestation attested-tls-poc ccc_attestation:attested_tls_poc (from the name) | through 731ca82ed533fc7a1092be980887ae2e34261da2 | CNA record |
References
- https://github.com/CCC-Attestation/attested-tls-poc/pull/58patch, technical-description, issue-tracking
- https://github.com/CCC-Attestation/attested-tls-poc/tree/5b6c5374b3fe8b671906c8ab32f6134d9c3da26d/relay-attacks-formaltechnical-description
- https://github.com/ionut-arm/mbedtls/blob/f4ac7593826a506fc509c83cad73786acab1d442/library/ssl_tls13_generic.c#L430-L436technical-description
- https://datatracker.ietf.org/doc/draft-intra-handshake-fail/technical-description
- https://github.com/muhammad-usama-sardar/intra-handshake.failtechnical-description
- https://github.com/CCC-Attestation/attested-tls-pocproduct
- https://www.vulncheck.com/advisories/ccc-attestation-sig-attested-tls-poc-through-commit-731ca82-attestation-relay-attackthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.