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NTAP-20250509-0005 — CVE-2021-28831 BusyBox Vulnerability in NetApp Products

Published 2025-05-09 · Updated 2025-05-09 · Status: Final · Exploitation: Public · Severity: not scored · ONTAP affected: No — other NetApp product

Official advisory: NTAP-20250509-0005 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Baseboard management controllers · Cloud Backup / AltaVault / SteelStore · E-Series / SANtricity · SolidFire / NetApp HCI | other NetApp product

CVEs in this advisory

CVE-2021-28831 · site index

Impact

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

Affected products

AFF Baseboard Management Controller (BMC) - A700s
FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250
NetApp Cloud Backup (formerly AltaVault)
NetApp E-Series Performance Analyzer
NetApp HCI Baseboard Management Controller (BMC) - H410C
NetApp HCI Compute Node (Bootstrap OS)
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node (Element Software)

Official fixes

FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250 — vendor fix ↗
NetApp E-Series Performance Analyzer — vendor fix ↗
AFF Baseboard Management Controller (BMC) - A700s — vendor fix ↗
NetApp HCI Compute Node (Bootstrap OS) — vendor fix ↗
NetApp SolidFire & HCI Management Node — vendor fix ↗
NetApp SolidFire & HCI Storage Node (Element Software) — vendor fix ↗

What to do

Compare your installed product and version against the affected list above and the official advisory's affected-versions table.
Apply the fixed release named in the official advisory, or the documented workaround if no fix ships yet.
Limit management-plane exposure (BMC/management interfaces, web UIs, SNMP) until patched.
Track follow-ups in the site CVE index and the security RSS feed.