CVE-2026-112377
CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attack
CCC-Attestation attested-tls-poc
CVSS
9.1CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 7% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- attested-tls-pocaffected: all versions through 731ca82ed533fc7a1092be980887ae2e34261da2CVE List
References 7
- github.com/CCC-Attestation/attested-tls-poc/pull/58Fixvia CVE List
- vulncheck.com/advisories/ccc-attestation-sig-attested-tls-poc-through-commit-731ca82-attestation-relay-attackAdvisoryvia CVE List
- github.com/CCC-Attestation/attested-tls-poc/tree/5b6c5374b3fe8b671906c8ab32f6134d9c3da26d/relay-attacks-formalReferencevia CVE List
- github.com/ionut-arm/mbedtls/blob/f4ac7593826a506fc509c83cad73786acab1d442/library/ssl_tls13_generic.c#L430-L436Referencevia CVE List
- datatracker.ietf.org/doc/draft-intra-handshake-fail/Referencevia CVE List
- github.com/muhammad-usama-sardar/intra-handshake.failReferencevia CVE List
- github.com/CCC-Attestation/attested-tls-pocReferencevia CVE List