Home / Security / Advisories / NTAP-20251031-0009

NTAP-20251031-0009 — CVE-2023-5156 Glibc Vulnerability in NetApp Products

Published 2025-10-31 · Updated 2026-09-01 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20251031-0009 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP · SolidFire / NetApp HCI | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2023-5156 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2023-5156 — A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS).

Affected products

ONTAP tools for VMware vSphere 9
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node (Element Software)

What to do

Check the affected products listed above against the official advisory's affected-versions table — that is where the exact ONTAP 9 release, ONTAP tool, or management product versions are named.
If affected and a fixed release exists, plan the upgrade — see the ONTAP upgrade runbook.
If exploitation is listed as "active", treat remediation as urgent and review exposure (management LIFs, ONTAP S3, SnapMirror endpoints).
Harden in parallel: security hardening baseline and ransomware protection on ONTAP.