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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AWS aws-nitro-enclaves-sdk-c unaffected
Version Status Constraints
0 affected < 0.4.6

No data.

No data.

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Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://aws.amazon.com/security/security-bulletins/2026-157-aws/ cve-icon cve-icon
https://github.com/aws/aws-nitro-enclaves-sdk-c/releases/tag/v0.4.6 cve-icon cve-icon
https://github.com/aws/aws-nitro-enclaves-sdk-c/security/advisories/GHSA-f6f6-6f88-r57j cve-icon cve-icon
History

Fri, 30 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 30 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Unvalidated parent-supplied AWS Region in AWS aws-nitro-enclaves-sdk-c allows impersonation of the enclave's AWS KMS endpoint
First Time appeared Aws
Aws aws-nitro-enclaves-sdk-c
Weaknesses CWE-807
CPEs cpe:2.3:a:aws:aws-nitro-enclaves-sdk-c:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws aws-nitro-enclaves-sdk-c
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-10-30T18:08:59.904Z

Reserved: 2026-10-29T14:31:17.882Z

Link: CVE-2026-119148

cve-icon Vulnrichment

Updated: 2026-10-30T18:02:02.966Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T17:17:16.493

Modified: 2026-10-30T19:23:54.487

Link: CVE-2026-119148

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T18:15:07Z

Weaknesses