CVE-2022-21318Network attack vector

Code execution via unvalidated data-node job index

Published Jan 19, 2022 · Updated Sep 24, 2024

Out-of-bounds write in Oracle MySQL Cluster 7.6.20 and earlier or 8.0.27 and earlier allows remote attackers to execute arbitrary code. Data-node job processing fails to validate a user-supplied array index before writing, permitting a write beyond the array boundary. Oracle instead assesses exploitation as local, high-privilege, high-complexity, and dependent on another person's interaction, with full cluster takeover.

CVSS severity6.3
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Oracle MySQL Cluster 7.6.20 and earlier or 8.0.27 and earlier allows remote attackers to execute arbitrary code. Data-node job processing fails to validate a user-supplied array index before writing, permitting a write beyond the array boundary. Oracle instead assesses exploitation as local, high-privilege, high-complexity, and dependent on another person's interaction, with full cluster takeover.

The record

CVE
CVE-2022-21318
Published
Jan 19, 2022
Updated
Sep 24, 2024
Vendor
Oracle Corporation
Product
MySQL Cluster
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=7.6.20 and prior
  2. Affected versionversion=8.0.27 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · MySQL Clusterversion=7.6.20 and prior; version=8.0.27 and prior

Published CVSS scores

6.3Oracle CorporationCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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