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CVE Record

CVE-2022-21553: 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. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

MediumCVSS 4.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This flaw can let a highly privileged MySQL user crash or hang MySQL Server remotely, causing database downtime. It does not indicate data theft or data modification. Business urgency is highest for production MySQL 8.0.29 or earlier where privileged accounts are broadly available or network access is weakly restricted.

Executive priority

Treat as a moderate-priority availability risk. Patch exposed or business-critical MySQL servers promptly, but urgency is lower than unauthenticated code execution because exploitation requires high privileges.

Technical view

CVE-2022-21553 affects Oracle MySQL Server 8.0.29 and prior in the Server Optimizer component. The CVSS vector indicates network access, low attack complexity, high privileges required, no user interaction, unchanged scope, and availability-only impact resulting in complete denial of service.

Likely exposure

Exposure is likely limited to Oracle MySQL Server 8.0.29 and earlier. Practical exposure depends on whether attackers can reach MySQL over supported network protocols and already hold high database privileges.

Exploitation context

The source bundle does not show CISA KEV listing, active exploitation, or public exploit evidence. The attacker must be highly privileged, so this is mainly a resilience and insider-or-compromised-account risk.

Researcher notes

Available evidence identifies the affected component and impact, but not detailed root cause, CWE, or exploit mechanics. Do not infer confidentiality or integrity impact; the published CVSS and description support availability-only denial of service.

Mitigation direction

  • Apply Oracle MySQL updates from the July 2022 Critical Patch Update guidance.
  • Check NetApp guidance if MySQL is bundled or supported through NetApp products.
  • Restrict MySQL network access to trusted hosts and application tiers.
  • Review and minimize high-privilege MySQL accounts.
  • Prioritize production systems where MySQL downtime affects customer-facing services.

Validation and detection

  • Inventory MySQL Server instances and identify versions 8.0.29 or earlier.
  • Confirm July 2022 Oracle CPU fixes or later vendor updates are applied.
  • Review who has high-privilege MySQL access across production systems.
  • Verify MySQL is not reachable from unnecessary networks.
  • Check operational logs for unexplained MySQL hangs or repeatable crashes.
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-2022-21553 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
4.9 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/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
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
4.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H1.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.9Medium
CVSS 3.1 vector shape for CVE-2022-21553Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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