# CVE-2026-85781: Unverified access point ownership in Amazon EFS CSI Driver

> CVE-2026-85781: Unverified access point ownership in Amazon EFS CSI Driver. CVSS 8.7 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-85781
Last updated: 2026-09-08T14:00:33Z

- Published: 2026-09-04 18:49 UTC · Updated: 2026-09-08 14:00 UTC · Assigner: AMZN
- CVSS: 8.7 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
- EPSS: 0.44%, 38th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-283

## 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.

## Affected vendors and products

- aws: aws-efs-csi-driver

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-85781)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-85781)
- [https://aws.amazon.com/security/security-bulletins/2026-099-aws/](https://aws.amazon.com/security/security-bulletins/2026-099-aws/)
- [https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.4.1](https://github.com/kubernetes-sigs/aws-efs-csi-driver/releases/tag/v3.4.1)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-85781 · Markdown: https://rewindex.com/cve/CVE-2026-85781.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-85781 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:23.184Z