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NTAP-20250711-0009 — CVE-2025-6021 Libxml2 Vulnerability in NetApp Products
Published 2025-07-11 · Updated 2026-10-09 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes
Official advisory: NTAP-20250711-0009 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.
Product family: Other NetApp products · SolidFire / NetApp HCI · ONTAP · SnapManager / Snap utilities · NetApp Console / BlueXP | ONTAP-relevant | highest CVSS: 7.5
CVEs in this advisory
- CVE-2025-6021 — HIGH · CVSS 7.5 · site index
What the CVE records say
CVE-2025-6021 — A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.
Impact
Successful exploitation of this vulnerability could lead to Denial of Service (DoS).
Affected products
- NetApp Manageability SDK
- NetApp SolidFire & HCI Management Node
- NetApp SolidFire & HCI Storage Node (Element Software)
- ONTAP 9
- SnapManager for Hyper-V
- Cloud Volumes ONTAP Mediator
- FAS/AFF BIOS - A900/9500
- NetApp Console Agent OVA
- NetApp SMI-S Provider
Official fixes
- NetApp Manageability SDK — vendor fix ↗
- ONTAP 9 — vendor fix ↗
- ONTAP 9 — vendor fix ↗
- ONTAP 9 — vendor fix ↗
- ONTAP 9 — vendor fix ↗
- ONTAP 9 — vendor fix ↗
- ONTAP 9 — vendor fix ↗
- ONTAP 9 — vendor fix ↗
References
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.
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
- Every NetApp advisory published in 2025