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CVE Record

CVE-2022-21509: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.29 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server as well as unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-21509 affects Oracle MySQL Server 8.0.29 and earlier. A highly privileged network attacker could make the database hang or repeatedly crash, and may modify some accessible data. The main business risk is service disruption, with some integrity risk, not data theft according to the provided CVSS vector.

Executive priority

Treat as a scheduled but important database maintenance item. Prioritize critical MySQL servers, externally reachable administrative paths, and environments with broad privileged account access. The high privilege requirement lowers urgency compared with unauthenticated remote compromise.

Technical view

The issue is in MySQL Server's Server: Optimizer component. The CVSS vector is AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H. Successful exploitation can cause complete denial of service and unauthorized update, insert, or delete access to some MySQL Server accessible data.

Likely exposure

Exposure is most likely where Oracle MySQL Server 8.0.29 or earlier is deployed and reachable by highly privileged database users over network protocols. The provided sources do not support unauthenticated or low-privilege exposure.

Exploitation context

Oracle describes the vulnerability as easily exploitable, but it requires high privileges. The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation or public exploit availability.

Researcher notes

The source bundle provides affected version, component, CVSS, and impact, but no CWE or detailed root cause. Avoid assuming exploit mechanics beyond the optimizer component and stated high-privilege network access requirement.

Mitigation direction

  • Apply Oracle's July 2022 Critical Patch Update or a later supported MySQL update.
  • Use distribution or appliance vendor packages where MySQL is supplied by that vendor.
  • Restrict network access to MySQL from only approved administrative and application hosts.
  • Review and minimize high-privileged MySQL accounts.
  • Check Oracle, NetApp, and Fedora guidance for environment-specific remediation details.

Validation and detection

  • Inventory MySQL Server deployments and record exact versions.
  • Flag Oracle MySQL Server 8.0.29 and earlier for remediation review.
  • Confirm the July 2022 CPU or later vendor update is installed.
  • Audit which high-privileged accounts can connect over the network.
  • Review database logs for repeated crashes, hangs, or unexpected data modification events.
Prepared
Confidence
high
Sources
5

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.

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CVE-2022-21509 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
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

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
4Source 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
5.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H1.24.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2022-21509Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

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 Server8.0.29 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.