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NTAP-20261006-0005 — CVE-2026-54873 OpenSSL Vulnerability in NetApp Products

Published 2026-10-06 · Updated 2026-10-06 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20261006-0005 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Other NetApp products · Baseboard management controllers · Active IQ Unified Manager · Brocade SAN firmware · ONTAP · SolidFire / NetApp HCI · NetApp Console / BlueXP · SnapCenter | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2026-54873 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2026-54873 — Issue summary: QUIC process may keep memory for QUIC packet buffer for much longer period than necessary. Impact summary: Remote peer can exploit this vulnerability by sending maliciously crafted packets, making the local QUIC stack to keep the memory for packet buffers allocated. The time for which the memory remains allocated is entirely under the control of the potentially malicious remote peer. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: To save copy operation from the packet buffer to the stream reassemble buffer the QUIC stack leaves the stream data on the packet buffer waiting to be copied to a buffer provided by the local receiving application. The QUIC stack releases a reference to the packet buffer only after the data are copied to the application buffer. This design is more efficient for legitimate data transfers but enables an attacker to allocate a lot more memory than actually required by the data kept in the receiving stream buffer. To mitigate the vulnerability, the QUIC stack now calculates and monitors memory overhead for every stream. The memory overhead for a single stream frame is calculated as a difference between the size of the whole packet that carries the stream frame and the size of the stream frame itself. The memory overhead for a single stream frame is added to the total (cumulative) memory overhead QUIC stack keeps for each stream. Once the cumulative memory overhead exceeds 64kB, the QUIC stack moves the stream frame data from the packet buffer to the stream buffer, starting with the next packet received. FIPS impact: no The FIPS module is not affected as the QUIC implementation is outside of the OpenSSL FIPS module boundary.

Impact

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

Affected products

AFF BIOS - A700s
AFF Baseboard Management Controller (BMC) - A700s
AFF/ASA/FAS Baseboard Management Controller (BMC) - A1K/A90/A70/C80/FAS90/FAS70
AFF/ASA/FAS Baseboard Management Controller (BMC) - A50/A30/A20/C60/C30/FAS50
Active IQ Config Advisor
Active IQ OneCollect
Brocade Fabric Operating System Firmware
Brocade SAN Navigator (SANnav)
Cloud Volumes ONTAP Mediator
FAS/AFF BIOS - 8300/8700/A400/C400
FAS/AFF BIOS - A320
FAS/AFF BIOS - A800/C800

References

https://openssl-library.org/news/secadv/20260929.txt ↗

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.