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VULNERABILITIES

CVE-2026-119116 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: AMZNCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://aws.amazon.com/security/security-bulletins/2026-157-aws/ AMZN
https://github.com/aws/aws-nitro-enclaves-sdk-c/releases/tag/v0.4.6 AMZN
https://github.com/aws/aws-nitro-enclaves-sdk-c/security/advisories/GHSA-cfhm-qfw4-j7qq AMZN

Weakness Enumeration

CWE-IDCWE NameSource
CWE-415Double FreeAMZN
CWE-416Use After FreeAMZN

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-119116
NVD Published Date:
Oct 30, 2026
NVD Last Modified:
Oct 30, 2026
Source:
AMZN
CVE-2026-119116 Details - Not Deferred