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NTAP-20260227-0010 — CVE-2002-20001 Diffie-Hellman Key Exchange Protocol Vulnerability in NetApp Products

Published 2026-02-27 · Updated 2026-08-06 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20260227-0010 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Astra Control · E-Series / SANtricity · Baseboard management controllers · Other NetApp products · ONTAP · SolidFire / NetApp HCI · NetApp Console / BlueXP | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2002-20001 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2002-20001 — The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS). <br><br> E-Series SANtricity OS Controller Software:<br> Affected only when SSH is enabled - it is disabled by default.

Affected products

Astra Control Center
E-Series SANtricity OS Controller Software
FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250
NetApp Manageability SDK
NetApp Shift Toolkit
ONTAP Select Deploy administration utility
ONTAP tools for VMware vSphere 10
Global File Cache
Management Services for Element Software and NetApp HCI
MetroCluster Tiebreaker
NetApp Console Agent OVA
NetApp SMI-S Provider

Official fixes

E-Series SANtricity OS Controller Software — vendor fix ↗
NetApp Manageability SDK — vendor fix ↗

References

https://nvd.nist.gov/vuln/detail/CVE-2002-20001 ↗

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.