HIGH 8.7 NVD
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 m
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.
References
- 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
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-10-30 via NVD.
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