Unverified ownership of a storage access point in the volume deletion component of the Amazon EFS CSI Driver before v3.4.1 might allow an authenticated Kubernetes user with PersistentVolume creation privileges to cause recursive deletion of directories on an EFS filesystem they are not authorized to access, via a crafted PersistentVolume volumeHandle that pairs an access point from one filesystem with a different target filesystem.



To remediate this issue, users should upgrade to version v3.4.1.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

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-efs-csi-driver unaffected
Version Status Constraints
0 affected ≤ 3.4.0

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No data.

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Project Subscriptions

Vendors Products
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Aws-efs-csi-driver Subscribe
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/2026-099-aws/ cve-icon cve-icon
https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.4.1 cve-icon cve-icon
History

Fri, 04 Sep 2026 19:00:00 +0000

Type Values Removed Values Added
Description Unverified ownership of a storage access point in the volume deletion component of the Amazon EFS CSI Driver before v3.4.1 might allow an authenticated Kubernetes user with PersistentVolume creation privileges to cause recursive deletion of directories on an EFS filesystem they are not authorized to access, via a crafted PersistentVolume volumeHandle that pairs an access point from one filesystem with a different target filesystem. To remediate this issue, users should upgrade to version v3.4.1.
Title Unverified access point ownership in Amazon EFS CSI Driver
First Time appeared Aws
Aws aws-efs-csi-driver
Weaknesses CWE-283
CPEs cpe:2.3:a:aws:aws-efs-csi-driver:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws aws-efs-csi-driver
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-09-04T19:28:03.833Z

Reserved: 2026-09-04T16:27:45.409Z

Link: CVE-2026-85781

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T19:17:34.157

Modified: 2026-09-04T20:17:33.030

Link: CVE-2026-85781

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T20:45:17Z

Weaknesses