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Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-6949

Samba Vulnerability in NetApp Products

CVE-2026-6949: Samba Vulnerability in NetApp Products. Not in the CISA KEV catalog. High advisory severity (CVSS 7.5, 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-2026-6949 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
High
CVSS base score
7.5 (NetApp), 7.5 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (Red Hat)
Weakness
CWE-787
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-2026-6949; bulletin-wide values are not repeated here.

Is CVE-2026-6949 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-6949 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-2026-6949?

The tracked advisories that cover only this CVE do not list a fixed release yet. That does not mean no fix exists; check each vendor source below.

Vendor advisory comparison

NetApp

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-6949] Samba Vulnerability in NetApp Products

    NTAP-20260821-0020Source published Source updated

    Samba versions 4.0 and higher are susceptible to a vulnerability which when successfully exploited could lead to a large out-of-bounds write causing the server to crash. Successful exploitation of this vulnerability could lead to addition or modification of data. 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
    No product details extracted. Check the source bulletin.
    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

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-6949] TSIG packet with crafted name compression can crash DNS server

    CVE-2026-6949Source published Source updated

    A flaw was found in Samba's internal DNS server when processing TSIG-signed DNS packets containing compressed names. Incorrect size calculations while determining the portion of the DNS packet covered by the TSIG signature can result in an integer underflow, leading to an out-of-bounds memory write during packet processing. A remote attacker can send a specially crafted TSIG-signed DNS packet to cause the DNS server to terminate unexpectedly. Red Hat Product Security evaluates this vulnerability as having an Important impact for Samba deployments operating as an Active Directory Domain Controller (AD DC) using the internal DNS server engine. ``` Red Hat Enterprise Linux (RHEL) Context: Default installations of Red Hat Enterprise Linux (RHEL) are not affected. RHEL does not ship or…

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    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

More NetApp advisories

All NetApp advisories

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