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NTAP-20260501-0006 — CVE-2026-42512 FreeBSD Vulnerability in NetApp Products

Published 2026-05-01 · Updated 2026-09-16 · Status: Final · Exploitation: Public · Severity: HIGH 8.1 · ONTAP affected: Yes

Official advisory: NTAP-20260501-0006 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP | ONTAP-relevant | highest CVSS: 8.1

CVEs in this advisory

CVE-2026-42512 — HIGH · CVSS 8.1 · site index

What the CVE records say

CVE-2026-42512 — As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun. A specially crafted packet can cause dhclient to overrun its buffer of environment entries. This can result in a crash, but it may be possible to leverage this bug to achieve remote code execution.

Impact

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

Affected products

ONTAP 9

Official fixes

ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗

References

https://www.freebsd.org/security/advisories/FreeBSD-SA-26:15.dhclient.asc ↗

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.