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CVE Record

CVE-2020-2924: 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 8.0.19 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 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/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

CVE-2020-2924 is a MySQL Server availability flaw in the Optimizer component. A high-privileged attacker who can reach MySQL over the network could make the server hang or crash repeatedly, causing complete denial of service. It does not indicate data theft or tampering.

Executive priority

Treat as a scheduled but real availability risk. Prioritize faster where MySQL supports customer-facing services, privileged access is shared, or outage tolerance is low. It is not currently supported as an emergency exploitation case by the supplied sources.

Technical view

Oracle lists affected MySQL Server versions as 8.0.19 and prior. The CVSS 3.0 vector is AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H, meaning network-reachable, low complexity, high privileges required, and availability-only impact.

Likely exposure

Exposure is limited to MySQL Server 8.0.19 and prior where privileged database users can connect over supported network protocols. Systems with tightly controlled admin credentials and restricted database network access have lower practical risk.

Exploitation context

The source bundle says the issue is easily exploitable but requires high privileges. KEV is false, and no provided source states active exploitation. Evidence supports denial-of-service risk, not confidentiality or integrity compromise.

Researcher notes

No CWE is provided in the bundle. The affected component is Server: Optimizer. The exact fixed version is not named in the supplied text, so validation should rely on Oracle CPU guidance and downstream vendor advisories rather than assumptions.

Mitigation direction

  • Inventory MySQL Server instances and identify versions 8.0.19 and prior.
  • Apply Oracle or distribution vendor updates for affected MySQL packages.
  • Restrict MySQL network access to trusted application and administration hosts.
  • Review and minimize high-privilege MySQL accounts.
  • Monitor database availability for hangs or repeated crashes.

Validation and detection

  • Confirm each MySQL Server version against Oracle and distribution advisories.
  • Verify exposed MySQL listeners are not broadly reachable.
  • Review privileged account assignments and recent administrative access.
  • Confirm patch status through vendor package or deployment records.
  • Check monitoring for unexplained MySQL hangs or crash loops.
Prepared
Confidence
medium
Sources
7

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-2020-2924 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.9 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/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
8Source 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 3.0MediumCVSS:3.0/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 3.0 score

4.9Medium
CVSS 3.0 vector shape for CVE-2020-2924Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/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 Server8.0.19 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.