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NTAP-20261016-0004 — CVE-2026-33416 LIBPNG Vulnerability in NetApp Products

Published 2026-10-16 · Updated 2026-10-16 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: No — other NetApp product

Official advisory: NTAP-20261016-0004 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 | other NetApp product | highest CVSS: 7.5

CVEs in this advisory

CVE-2026-33416 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2026-33416 — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. In versions 1.2.1 through 1.6.55, `png_set_tRNS` and `png_set_PLTE` each alias a heap-allocated buffer between `png_struct` and `png_info`, sharing a single allocation across two structs with independent lifetimes. The `trans_alpha` aliasing has been present since at least libpng 1.0, and the `palette` aliasing since at least 1.2.1. Both affect all prior release lines `png_set_tRNS` sets `png_ptr->trans_alpha = info_ptr->trans_alpha` (256-byte buffer) and `png_set_PLTE` sets `info_ptr->palette = png_ptr->palette` (768-byte buffer). In both cases, calling `png_free_data` (with `PNG_FREE_TRNS` or `PNG_FREE_PLTE`) frees the buffer through `info_ptr` while the corresponding `png_ptr` pointer remains dangling. Subsequent row-transform functions dereference and, in some code paths, write to the freed memory. A second call to `png_set_tRNS` or `png_set_PLTE` has the same effect, because both functions call `png_free_data` internally before reallocating the `info_ptr` buffer. Version 1.6.56 fixes the issue.

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 (docker_occm)
NetApp Console Agent OVA
NetApp SolidFire & HCI Management Node
iNetApp SolidFire & HCI Storage Node (Element Software)

References

https://github.com/pnggroup/libpng/security/advisories/GHSA-m4pc-p4q3-4c7j ↗

What to do

Compare your installed product and version against the affected list above and the official advisory's affected-versions table.
Apply the fixed release named in the official advisory, or the documented workaround if no fix ships yet.
Limit management-plane exposure (BMC/management interfaces, web UIs, SNMP) until patched.
Track follow-ups in the site CVE index and the security RSS feed.