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CVE Record

CVE-2021-35598: Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General).

Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). Supported versions that are affected are 7.4.33 and prior, 7.5.23 and prior, 7.6.19 and prior and 8.0.26 and prior. Difficult to exploit vulnerability allows high privileged attacker with access to the physical communication segment attached to the hardware where the MySQL Cluster executes to compromise MySQL Cluster. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of MySQL Cluster. CVSS 3.1 Base Score 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H).

MediumCVSS 6.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-35598 affects Oracle MySQL Cluster. The attack is hard to pull off because it requires high privileges, access to the cluster’s physical communication segment, and user interaction. If successful, the impact is severe: takeover of MySQL Cluster.

Executive priority

Handle this as a moderate-priority infrastructure risk. The attack path is narrow, but a successful compromise could take over a database cluster. Prioritize patching where MySQL Cluster supports critical workloads or where privileged insider or adjacent-network risk is credible.

Technical view

Oracle describes this as a Cluster: General issue in MySQL Cluster versions 7.4.33 and prior, 7.5.23 and prior, 7.6.19 and prior, and 8.0.26 and prior. CVSS 3.1 is 6.3 with adjacent access, high complexity, high privileges, and required user interaction.

Likely exposure

Exposure is likely limited to organizations still running affected MySQL Cluster versions, especially where privileged users or administrators can access the same physical communication segment as the cluster. Internet-facing exposure is not supported by the provided CVSS vector.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation. Public scoring indicates exploitation is difficult and constrained, but successful exploitation can compromise confidentiality, integrity, and availability of the cluster.

Researcher notes

The bundle provides affected versions, CVSS vector, and impact, but no CWE, root cause, exploit detail, or confirmed exploitation. Avoid assuming broader MySQL Server impact; the named affected product is MySQL Cluster.

Mitigation direction

  • Review Oracle’s October 2021 CPU guidance for MySQL Cluster updates.
  • Upgrade MySQL Cluster beyond the affected version lines where applicable.
  • Check NetApp guidance if using NetApp products that bundle or depend on MySQL Cluster.
  • Restrict privileged access to cluster communication segments.
  • Treat suspicious privileged activity around cluster administration as high priority.

Validation and detection

  • Inventory MySQL Cluster deployments and record exact versions.
  • Confirm whether any deployment is 7.4.33, 7.5.23, 7.6.19, 8.0.26, or older.
  • Validate segmentation around MySQL Cluster communication networks.
  • Review privileged account access to cluster hosts and management paths.
  • Check vendor advisories for product-specific patch applicability.
Prepared
Confidence
medium
Sources
5

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-2021-35598 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

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
4Source 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
6.3CVSS 3.1MediumCVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H0.45.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.3Medium
CVSS 3.1 vector shape for CVE-2021-35598Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

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 Cluster7.4.33 and prior, 7.5.23 and prior, 7.6.19 and prior, 8.0.26 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.