Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
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-qf
FAQ
What is CVE-2026-119116?
CVE-2026-119116 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2026-119116?
CVE-2026-119116 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-119116?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.