LiveActive security incident?Get immediate response
CVE Record

CVE-2021-2411: Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: JS module).

Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: JS module). Supported versions that are affected are 8.0.25 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
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2021-2411 is a low-severity availability issue in Oracle MySQL Cluster. An unauthenticated attacker with network access could, under difficult conditions, cause a partial denial of service. It is not described as exposing data or allowing data modification.

Executive priority

Treat as routine patching unless MySQL Cluster is exposed to untrusted networks or supports critical operations. The known impact is limited to partial availability loss, not data theft or compromise.

Technical view

The flaw affects MySQL Cluster 8.0.25 and prior in the Cluster JS module. CVSS 3.1 is 3.7: network-accessible, high attack complexity, no privileges or user interaction, unchanged scope, no confidentiality or integrity impact, and low availability impact.

Likely exposure

Exposure is most likely where MySQL Cluster 8.0.25 or earlier is deployed and reachable over network protocols. General MySQL deployments should not be assumed affected unless they use the MySQL Cluster product and affected component.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation evidence. Exploitation is rated difficult due to high attack complexity, but it requires no authentication if the vulnerable service is network-accessible.

Researcher notes

Public evidence identifies the affected product, version boundary, component, and CVSS characteristics, but does not provide exploit details, CWE mapping, or specific fixed versions in the supplied bundle. Avoid broadening scope beyond Oracle MySQL Cluster.

Mitigation direction

  • Apply Oracle guidance from the July 2021 Critical Patch Update.
  • Upgrade affected MySQL Cluster deployments beyond 8.0.25 where vendor guidance confirms remediation.
  • Restrict MySQL Cluster network access to trusted systems only.
  • Review NetApp advisory applicability if using NetApp products with MySQL Cluster exposure.
  • Monitor cluster availability for unexplained partial service disruption.

Validation and detection

  • Inventory MySQL Cluster deployments and record exact versions.
  • Identify any deployments running 8.0.25 or earlier.
  • Confirm whether the Cluster JS module is present or enabled.
  • Review network paths exposing MySQL Cluster protocols to untrusted sources.
  • Check Oracle and NetApp advisories for environment-specific remediation status.
Prepared
Confidence
medium
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2021-2411 mapping review

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

Open ATT&CK lookup
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-2021-2411Attack 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 Cluster8.0.25 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.