CVE-2026-119116

HIGH

MEDIUM Priority: 0.01 BB Relevance: 31/100

Published: 2026-10-30 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Local

AC: High

PR: Low

UI: None

S: Changed

C: High

I: High

A: High

Description

A use-after-free and double-free issue in the SetClient command handler of the kmstool-enclave sample application of AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow an application that runs on the parent EC2 instance to corrupt heap memory inside a Nitro Enclave which may lead to arbitrary code execution within the enclave. To remediate this issue, users should rebuild any enclave image that includes kmstool-enclave, or code derived from it, against aws-nitro-enclaves-sdk-c 0.4.6.