CVE-2026-112377

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 12.1% of scored records. A rank, not a probability.

NVD base score

9.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-20.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-19 17:26Z9 DAYS AGO

Last updated

2026-10-20 17:39Z8 DAYS AGO

Reserved

2026-10-19

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-346Origin Validation ErrorClass

Data version

5.2

Document digest

c00f4a6e7cadec59aa235f0ff64ac7c6ca63acaae92f67cc5fbae49400c788ca

• github.comPull Request #58https://github.com/CCC-Attestation/attested-tls-poc/pull/58patchtechnical-descriptionissue-tracking
• github.comhttps://github.com/CCC-Attestation/attested-tls-poc/tree/5b6c5374b3fe8b671906c8ab32f6134d9c3da26d/relay-attacks-formaltechnical-description
• github.comhttps://github.com/ionut-arm/mbedtls/blob/f4ac7593826a506fc509c83cad73786acab1d442/library/ssl_tls13_generic.c#L430-L436technical-description
• datatracker.ietf.orghttps://datatracker.ietf.org/doc/draft-intra-handshake-fail/technical-description
• github.comhttps://github.com/muhammad-usama-sardar/intra-handshake.failtechnical-description
• github.comhttps://github.com/CCC-Attestation/attested-tls-pocproduct
• www.vulncheck.comVulnCheck Advisory: CCC Attestation SIG attested-tls-poc through commit 731ca82 Attestation Relay Attackhttps://www.vulncheck.com/advisories/ccc-attestation-sig-attested-tls-poc-through-commit-731ca82-attestation-relay-attackthird-party-advisory