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CVE Record

CVE-2021-35613: 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 unauthenticated 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 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

LowCVSS 3.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2021-35613 is a low-severity Oracle MySQL Cluster flaw. An unauthenticated network attacker could cause a partial denial of service, but exploitation is described as difficult and impacts availability only. The main business concern is reduced cluster service reliability where affected MySQL Cluster versions remain exposed.

Executive priority

Treat this as routine patch management unless MySQL Cluster supports critical services or is reachable from untrusted networks. The risk is limited to partial availability impact, but outdated database clustering software should still be removed from exposure.

Technical view

The vulnerability affects Oracle MySQL Cluster 8.0.26 and prior in the Cluster: General component. CVSS 3.1 is 3.7 with network attack vector, high attack complexity, no privileges, no user interaction, unchanged scope, and low availability impact only.

Likely exposure

Exposure is most likely in environments running Oracle MySQL Cluster 8.0.26 or earlier with cluster services reachable over network paths. Standard MySQL Server deployments should not be assumed affected unless they include MySQL Cluster.

Exploitation context

The supplied sources do not indicate active exploitation, and the CVE is not listed as KEV. Exploitation requires unauthenticated network access but is rated high complexity. Successful exploitation can only cause partial denial of service, not data disclosure or integrity compromise.

Researcher notes

Evidence is limited to vendor and CVE records. No CWE, exploit detail, or fixed version is provided in the bundle. Avoid assuming broader MySQL product impact beyond Oracle MySQL Cluster versions 8.0.26 and prior.

Mitigation direction

  • Apply Oracle’s October 2021 Critical Patch Update guidance for MySQL Cluster.
  • Check Oracle and relevant downstream vendor advisories for exact fixed versions.
  • Restrict network access to MySQL Cluster services to trusted hosts.
  • Prioritize remediation for internet-reachable or business-critical cluster deployments.

Validation and detection

  • Inventory systems running Oracle MySQL Cluster and record exact versions.
  • Confirm whether any deployment is version 8.0.26 or earlier.
  • Review firewall and segmentation rules around cluster communication paths.
  • Verify vendor patch or upgrade completion in change records.
  • Monitor affected clusters for unexplained partial availability degradation.
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-2021-35613 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
3.7 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:N/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
3.7CVSS 3.1LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L2.21.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

3.7Low
CVSS 3.1 vector shape for CVE-2021-35613Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:N/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.