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Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-52999

Linux Kernel Vulnerability in NetApp Products

CVE-2026-52999: Linux Kernel Vulnerability in NetApp Products. Not in the CISA KEV catalog. Medium advisory severity (CVSS 5.5, NetApp).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-52999 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Medium
CVSS base score
5.5 (NetApp), 5.5 (Red Hat)
Vendor advisories
2 from NetApp, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-52999; bulletin-wide values are not repeated here.

Is CVE-2026-52999 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-52999 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-52999?

  • NetApp HCI Baseboard Management Controller (BMC) - H610S has no planned fix; migrate to a supported release or product and consult NetApp's end-of-support notice. (NetApp)

Vendor advisory comparison

NetApp

1 advisory
  • Advisory severityMedium5.5

    Medium [CVE-2026-52999] Linux Kernel Vulnerability in NetApp Products

    NTAP-20261030-0012Source published Source updated

    Linux kernel versions 4.19.26 through 4.19.325, 4.20.13 through 5.0, 5.0.1 through 5.10.257, 5.11 through 5.15.208, 5.16 through 6.1.174, 6.2 through 6.6.140, 6.7 through 6.12.90, 6.13 through 6.18.32 and 6.19 through 7.0.9 are susceptible to a vulnerability which when successfully exploited could lead to Denial of Service (DoS). Successful exploitation of this vulnerability could lead to Denial of Service (DoS). Affected products: NetApp HCI Baseboard Management Controller (BMC) - H610S. NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    • NetApp HCI Baseboard Management Controller (BMC) - H610S
    Source-reported affected versions
    • 4.19.26
    • 4.19.325
    • 4.20.13
    • 5.0.1

    11 more entries in the full advisory.

    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    • NetApp HCI Baseboard Management Controller (BMC) - H610S has no planned fix; migrate to a supported release or product and consult NetApp's end-of-support notice.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium5.5

    Medium [CVE-2026-52999] fix out-of-bounds read on option matching

    CVE-2026-52999Source published Source updated

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix out-of-bounds read on option matching In nf_osf_match(), the nf_osf_hdr_ctx structure is initialized once and passed by reference to nf_osf_match_one() for each fingerprint checked. During TCP option parsing, nf_osf_match_one() advances the shared ctx->optp pointer. If a fingerprint perfectly matches, the function returns early without restoring ctx->optp to its initial state. If the user has configured NF_OSF_LOGLEVEL_ALL, the loop continues to the next fingerprint. However, because ctx->optp was not restored, the next call to nf_osf_match_one() starts parsing from the end of the options buffer. This causes subsequent matches to read garbage data and fail immediately, making it impossible…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 9
    • Red Hat package: kernel-rt
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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