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NTAP-20260617-0015 — CVE-2026-35188 OpenSSL Vulnerability in NetApp Products

Published 2026-06-17 · Updated 2026-10-07 · Status: Interim · Exploitation: Public · Severity: MEDIUM 5.0 · ONTAP affected: Yes

Official advisory: NTAP-20260617-0015 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: NetApp Console / BlueXP · SolidFire / NetApp HCI · ONTAP · Brocade SAN firmware · Other NetApp products | ONTAP-relevant | highest CVSS: 5.0

CVEs in this advisory

CVE-2026-35188 — MEDIUM · CVSS 5.0 · site index

What the CVE records say

CVE-2026-35188 — Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.

Impact

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

Affected products

NetApp Console Agent Container (adc)
NetApp Console Agent Container (cbs)
NetApp Console Agent Container (cbs-backend)
NetApp HCI Baseboard Management Controller (BMC) - H610S
ONTAP Select Deploy administration utility
Brocade Fabric Operating System Firmware
Brocade SAN Navigator (SANnav)
Cloud Volumes ONTAP Mediator
Global File Cache
NetApp Console Agent Container (alert-service-client)
NetApp Console Agent Container (alertmanager)
NetApp Console Agent Container (cadvisor)

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.