CVE-2026-119116

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    CVE-2026-119116

    Published: 30 Oct 2026Last Modified: 1 Nov 2026

    Summary: Use-after-free in the SetClient command handler of kmstool-enclave in AWS aws-nitro-enclaves-sdk-c

    Details: 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/CVEProject/cvelistV5/tree/main/cves/2026/119xxx/CVE-2026-119116.json, https://github.com/aws/aws-nitro-enclaves-sdk-c/security/advisories/GHSA-cfhm-qfw4-j7qq, https://nvd.nist.gov/vuln/detail/CVE-2026-119116, https://github.com/aws/aws-nitro-enclaves-sdk-c/releases/tag/v0.4.6

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -f2dbc3fb1ab9b4496ff8ebc077d24e5f24265923

    Affected versions

    v0.4.5
    v0.4.4
    v0.4.3
    v0.4.2
    v0.4.1
    v0.4.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-119116 | CVE-DB