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NTAP-20260508-0020 — CVE-2026-27137 Golang Vulnerability in NetApp Products

Published 2026-05-08 · Updated 2026-09-15 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20260508-0020 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Astra Control · Other NetApp products · ONTAP · NetApp Console / BlueXP | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2026-27137 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2026-27137 — When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.

Impact

Successful exploitation of this vulnerability could lead to disclosure of sensitive information, addition or modification of data, Denial of Service (DoS).

Affected products

Astra Control Center
Astra Control Center - NetApp Kubernetes Monitoring Operator
Data Infrastructure Insights Telegraf Agent
ONTAP tools for VMware vSphere 10
Astra Control Provisioner
FAS/AFF BIOS - A900/9500
NetApp Console Agent OVA

Official fixes

ONTAP tools for VMware vSphere 10 — vendor fix ↗

References

https://pkg.go.dev/vuln/GO-2026-4599 ↗

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.