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CVE-2026-119148— Unvalidated parent-supplied AWS Region in AWS aws-nitro-enclaves-sdk-c allows impersonation of the enclave's AWS KMS endpoint

Quick assessment

Affected
AWS aws-nitro-enclaves-sdk-c
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 AWS aws-nitro-enclaves-sdk-c 0.4.6 版本之前，由于字符串验证不完整，可能导致第三方冒充 AWS KMS 端点。 为修复此问题，用户应基于 aws-nitro-enclaves-sdk-c 0.4.6 版本重新构建任何自定义的飞地（enclave）镜像。

CVSS 6.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
AWS aws-nitro-enclaves-sdk-c < 0.4.6 affected
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I. Basic Information for CVE-2026-119148

Vulnerability Information
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Vulnerability Title
Unvalidated parent-supplied AWS Region in AWS aws-nitro-enclaves-sdk-c allows impersonation of the enclave's AWS KMS endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Incomplete string validation in AWS aws-nitro-enclaves-sdk-c before 0.4.6 may allow a third party to impersonate the AWS KMS endpoint. To remediate this issue, users should rebuild any custom enclave image against aws-nitro-enclaves-sdk-c 0.4.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在安全决策中依赖未经信任的输入
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AWS aws-nitro-enclaves-sdk-c 0 ~ 0.4.6 -

II. Public POCs for CVE-2026-119148

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III. Intelligence Information for CVE-2026-119148

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Other References for CVE-2026-119148 (3)

Same Patch Batch · AWS · 2026-10-30 · 3 CVEs total

CVE-2026-119116 7.8 HIGH Use-after-free in the SetClient command handler of kmstool-enclave in AWS aws-nitro-enclav
CVE-2026-119117 6.5 MEDIUM Insertion of sensitive information into a log file and process argument list in the Amazon

IV. Related Vulnerabilities

Same vendor: AWS
Same weakness: CWE-807