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NTAP-20260121-0010 — CVE-2025-39946 Linux Kernel Vulnerability in NetApp Products
Published 2026-01-21 · Updated 2026-01-29 · Status: Interim · Exploitation: Public
Official advisory: NTAP-20260121-0010 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.
CVEs in this advisory
- CVE-2025-39946 — CRITICAL CVSS 9.8 · site index
Affected products
- Active IQ Unified Manager for VMware vSphere
- Cloud Volumes ONTAP Mediator
- ONTAP Select Deploy administration utility
What to do
- Check your ONTAP versions against the official advisory's affected-versions table.
- 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).
Related reading
- Common ONTAP problems (FAQ) — plain-language symptoms and fixes
- ONTAP security hardening — baseline lockdown guidance
- Ransomware protection on ONTAP — SnapLock, SnapMirror vaulting, Anomaly Detection
- ONTAP error messages index — EMS/WAFL/NFS/SnapMirror messages