Home / Security / Advisories / NTAP-20250711-0004

NTAP-20250711-0004 — CVE-2025-4516 Python Vulnerability in NetApp Products

Published 2025-07-11 · Updated 2026-07-22 · Status: Final · Exploitation: Public · Severity: MEDIUM 5.9 · ONTAP affected: Yes

Official advisory: NTAP-20250711-0004 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: SolidFire / NetApp HCI · ONTAP | ONTAP-relevant | highest CVSS: 5.9

CVEs in this advisory

CVE-2025-4516 — MEDIUM · CVSS 5.9 · site index

What the CVE records say

CVE-2025-4516 — There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.

Impact

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

Affected products

NetApp HCI Compute Node (Bootstrap OS)
ONTAP 9

Official fixes

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

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.