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CVE Record

CVE-2021-35618: 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 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 unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Cluster. CVSS 3.1 Base Score 1.8 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L).

LowCVSS 1.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2021-35618 is a low-severity Oracle MySQL Cluster issue that could let a highly privileged attacker cause partial service disruption. The attacker needs access to the same physical communication segment as the cluster and the attack requires another person’s interaction, making practical business risk limited for well-segmented environments.

Executive priority

Treat as routine patch governance unless the organization runs older MySQL Cluster on poorly segmented infrastructure. Prioritize remediation during normal maintenance windows.

Technical view

Oracle lists MySQL Cluster 8.0.26 and prior as affected. The CVSS vector is AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L, meaning adjacent access, high complexity, high privileges, required user interaction, and only low availability impact. No CWE or root-cause detail is provided in the source bundle.

Likely exposure

Exposure is likely limited to organizations running MySQL Cluster 8.0.26 or earlier on reachable cluster communication segments. Internet-facing exposure is not supported by the provided CVSS vector.

Exploitation context

The provided sources do not indicate active exploitation. The bundle marks KEV as false, and the vulnerability requires high privileges, adjacent network position, high complexity, and user interaction.

Researcher notes

Evidence is sparse. Oracle confirms affected versions and impact, but the provided sources do not describe the underlying flaw, exploit method, or product-specific fixed versions beyond the CPU reference.

Mitigation direction

  • Review Oracle October 2021 CPU guidance for MySQL Cluster updates.
  • Upgrade affected MySQL Cluster deployments beyond 8.0.26 where applicable.
  • Restrict access to MySQL Cluster communication segments.
  • Check NetApp advisory relevance if NetApp infrastructure is in scope.

Validation and detection

  • Inventory all MySQL Cluster deployments and record versions.
  • Confirm whether any deployment is 8.0.26 or earlier.
  • Verify cluster communication networks are isolated from general user networks.
  • Review administrative access paths for unnecessary high-privilege access.
  • Monitor cluster availability logs for unexplained partial service disruption.
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-2021-35618 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
Low
CVSS
1.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:R/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
1.8CVSS 3.1LowCVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L0.41.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

1.8Low
CVSS 3.1 vector shape for CVE-2021-35618Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:R/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.