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CVE-2026-122266 Details

Description

Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS Network Policy Agent before 1.3.7 (VPC CNI before 1.22.3) might allow an authenticated adjacent user to bypass NetworkPolicy ingress enforcement on co-located pods via eBPF conntrack map poisoning using crafted AF_PACKET frames. To remediate this issue, users should upgrade to Amazon VPC CNI Managed Add-on v1.22.3 or later (which includes Network Policy Agent v1.3.7).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: AMZNCVSS-B:8.7 HIGHVector:CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://aws.amazon.com/security/security-bulletins/2026-170-aws/	AMZN
https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.3	AMZN
https://github.com/aws/amazon-vpc-cni-k8s/security/advisories/GHSA-rp3x-m95q-87mx	AMZN
https://github.com/aws/aws-network-policy-agent/releases/tag/v1.3.7	AMZN
https://github.com/aws/aws-network-policy-agent/security/advisories/GHSA-mm5f-ggvx-hmvw	AMZN

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1189	Improper Isolation of Shared Resources on System-on-a-Chip (SoC)	AMZN

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 6, 2026	CVE Modified	AMZN
Nov 4, 2026	New CVE Received	AMZN