CVE-2026-119116

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.1 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-157-aws/
https://github.com/aws/aws-nitro-enclaves-sdk-c/releases/tag/v0.4.6
https://github.com/aws/aws-nitro-enclaves-sdk-c/security/advisories/GHSA-cfhm-qfw4-j7qq

Configurations

No configuration.

History

30 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 17:17

Updated : 2026-10-30 20:17

NVD link : CVE-2026-119116

Mitre link : CVE-2026-119116

CVE.ORG link : CVE-2026-119116

JSON object : View

Products Affected

No product.

CWE

CWE-415

Double Free

CWE-416

Use After Free

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