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NTAP-20211029-0007 — CVE-2021-21706 PHP Vulnerability in NetApp Products
Published 2021-10-29 · Updated 2024-05-09 · Status: Final · Exploitation: Public · Severity: not scored · ONTAP affected: Yes
Official advisory: NTAP-20211029-0007 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.
Product family: Other NetApp products · ONTAP | ONTAP-relevant
CVEs in this advisory
Impact
Successful exploitation of this vulnerability could lead to addition or modification of data.
Affected products
- Element Plug-in for vCenter Server
- ONTAP 9 (formerly Clustered Data ONTAP)
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 2021