AWS aws-network-policy-agent/amazon-vpc-cni-k8s up to 1.3.6/1.22.2 Network Policy Agent/eBPF conntrack map isolation

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k1.03+

Summaryinfo

A vulnerability classified as critical was found in AWS aws-network-policy-agent and amazon-vpc-cni-k8s up to 1.3.6/1.22.2. Affected by this issue is some unknown functionality of the component Network Policy Agent/eBPF conntrack map. The manipulation results in isolation. This vulnerability is identified as CVE-2026-122266. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in AWS aws-network-policy-agent and amazon-vpc-cni-k8s up to 1.3.6/1.22.2. Affected is an unknown function of the component Network Policy Agent/eBPF conntrack map. The manipulation with an unknown input leads to a isolation vulnerability. CWE is classifying the issue as CWE-653. The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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).

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-122266 since 11/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.22.3 or 1.3.7 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.7
CNA Vector (AMZN): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Isolation
CWE: CWE-653
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: aws-network-policy-agent/amazon-vpc-cni-k8s 1.22.3/1.3.7

Timelineinfo

11/04/2026 Advisory disclosed
11/04/2026 +0 days CVE reserved
11/04/2026 +0 days VulDB entry created
11/04/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CNA: AMZN
CVE: CVE-2026-122266 (🔒)

GCVE (CVE): GCVE-0-2026-122266
GCVE (VulDB): GCVE-100-431256

Entryinfo

Created: 11/04/2026 23:03
Changes: 11/04/2026 23:03 (76)
Complete: 🔍
Cache ID: 216::103

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