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NTAP-20260422-0003 — CVE-2026-4046 GNU C Library (glibc) Vulnerability in NetApp Products

Published 2026-04-22 · Updated 2026-09-07 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20260422-0003 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Active IQ Unified Manager · SolidFire / NetApp HCI · ONTAP · Brocade SAN firmware · Other NetApp products · NetApp Console / BlueXP | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2026-4046 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2026-4046 — The iconv() function in the GNU C Library versions 2.43 and earlier may crash due to an assertion failure when converting inputs from the IBM1390 or IBM1399 character sets, which may be used to remotely crash an application. This vulnerability can be trivially mitigated by removing the IBM1390 and IBM1399 character sets from systems that do not need them.

Impact

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

Affected products

Active IQ Unified Manager for VMware vSphere
NetApp HCI Baseboard Management Controller (BMC) - H610S
ONTAP tools for VMware vSphere 10
Brocade Fabric Operating System Firmware
FAS/AFF BIOS - A900/9500
NetApp Console Agent OVA
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node (Element Software)

Official fixes

ONTAP tools for VMware vSphere 10 — vendor fix ↗

References

https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0007;hb=HEAD ↗

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.