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CVE Record

CVE-2022-21538: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Encryption). Supported versions that are affected are 8.0.29 and prior. Difficult to exploit vulnerability allows low 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 partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 3.1 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L).

LowCVSS 3.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This is a low-severity Oracle MySQL Server issue that can let a low-privileged network attacker disrupt part of the database service. The sources describe availability impact only, not data theft or data modification. Business urgency is mainly operational resilience for exposed or shared MySQL environments.

Executive priority

Handle through normal patch management unless the affected MySQL service is business-critical, broadly reachable, or shared by many low-privileged users. The known impact is partial service disruption, not compromise of confidentiality or integrity.

Technical view

CVE-2022-21538 affects Oracle MySQL Server 8.0.29 and prior in the Server: Security: Encryption component. CVSS 3.1 is 3.1: network attack vector, high complexity, low privileges required, no user interaction, and low availability impact only.

Likely exposure

Exposure is limited to Oracle MySQL Server 8.0.29 and earlier. Risk is higher where MySQL is reachable over the network and low-privileged accounts are available to users, applications, or partners outside a tightly trusted boundary.

Exploitation context

The CVE is not listed as CISA KEV in the provided bundle. The cited description says exploitation is difficult, requires low privileges and network access, and may cause partial denial of service. No source provided evidence of active exploitation.

Researcher notes

The available evidence identifies affected versions, component, CVSS vector, and availability-only impact. It does not provide CWE details, exploit mechanics, proof of active exploitation, or a specific fixed version in the bundle, so remediation should follow vendor advisories.

Mitigation direction

  • Review Oracle's July 2022 Critical Patch Update guidance.
  • Upgrade affected MySQL Server deployments to a vendor-supported fixed release.
  • Restrict network access to MySQL to trusted hosts and applications.
  • Review low-privileged database accounts and remove unnecessary access.
  • Monitor MySQL availability and error trends for abnormal disruptions.

Validation and detection

  • Inventory MySQL Server versions and flag 8.0.29 or earlier.
  • Confirm whether Oracle July 2022 CPU fixes are applied.
  • Check exposure of MySQL ports across internal and external networks.
  • Review account grants for unnecessary low-privileged access.
  • Check vendor advisories for embedded or appliance-delivered MySQL components.
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-2022-21538 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
3.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:L/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
3.1CVSS 3.1LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L1.61.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

3.1Low
CVSS 3.1 vector shape for CVE-2022-21538Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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