CVE-2021-2411Network attack vector

Unauthenticated partial service interruption

Published Jul 20, 2021 · Updated Sep 26, 2024

Denial of service in Oracle MySQL Cluster 8.0.25 and earlier allows remote attackers to partially interrupt service through the Cluster JS module. Oracle has not published the vulnerable function, attacker-controlled input, or incorrect operation within that module. Network access over one of multiple supported protocols and high attack complexity are required; the documented consequence is limited availability loss.

CVSS severity3.7
Low
EPSS probability1.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Oracle MySQL Cluster 8.0.25 and earlier allows remote attackers to partially interrupt service through the Cluster JS module. Oracle has not published the vulnerable function, attacker-controlled input, or incorrect operation within that module. Network access over one of multiple supported protocols and high attack complexity are required; the documented consequence is limited availability loss.

The record

CVE
CVE-2021-2411
Published
Jul 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle Corporation
Product
MySQL Cluster
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0.25 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · MySQL Clusterversion=8.0.25 and prior

Published CVSS scores

3.7Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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