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CVE Record

CVE-2021-35584: Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: ndbcluster/plugin DDL).

Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: ndbcluster/plugin DDL). Supported versions that are affected are 8.0.26 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Cluster. CVSS 3.1 Base Score 4.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L).

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-35584 affects Oracle MySQL Cluster 8.0.26 and earlier. A low-privileged network attacker could cause a partial denial of service, reducing cluster availability. The impact is availability-only and rated medium, but exposed clusters still deserve timely remediation because exploitation is described as easy.

Executive priority

Treat this as a moderate availability risk. It is not sourced as actively exploited, but network reachability and low privilege requirements reduce the barrier. Prioritize internet-exposed, partner-accessible, or business-critical MySQL Cluster environments first.

Technical view

The issue is in MySQL Cluster's ndbcluster/plugin DDL component. CVSS 3.1 is 4.3: network attack vector, low complexity, low privileges, no user interaction, unchanged scope, and low availability impact only. The source bundle does not identify a CWE or provide technical root-cause details.

Likely exposure

Organizations running Oracle MySQL Cluster 8.0.26 or earlier are in scope. Exposure is most relevant where low-privileged users or services can reach MySQL Cluster over supported network protocols. The provided evidence does not identify affected NetApp products or deployment-specific prerequisites.

Exploitation context

The provided bundle marks KEV as false and cites no active exploitation. Oracle describes the vulnerability as easily exploitable by a low-privileged attacker with network access via multiple protocols. No public exploit details are included in the supplied sources.

Researcher notes

The public bundle is thin: no CWE, no root-cause detail, no exploit artifacts, and no exact fixed version beyond Oracle's CPU reference. Validate exposure through version inventory, network reachability, and vendor advisories rather than assuming all MySQL deployments are affected.

Mitigation direction

  • Apply Oracle's October 2021 CPU guidance for MySQL Cluster.
  • Upgrade affected MySQL Cluster deployments according to vendor-supported fixed-version guidance.
  • Restrict MySQL Cluster network access to trusted systems and administrative paths.
  • Review and minimize low-privileged accounts that can access the cluster.
  • Check NetApp guidance if MySQL Cluster is embedded in managed products.

Validation and detection

  • Inventory MySQL Cluster instances and confirm whether versions are 8.0.26 or earlier.
  • Verify Oracle CPU remediation status through package, image, or vendor lifecycle records.
  • Confirm cluster ports are not reachable from untrusted networks.
  • Review accounts with cluster access and remove unnecessary low-privileged access.
  • Monitor for unexplained partial service disruption affecting MySQL Cluster availability.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-35584 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2021-35584Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationMySQL Cluster8.0.26 and priorListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.