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CVE Record

CVE-2020-2892: 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-2020-2892 is a MySQL Server availability flaw. An attacker who already has high privileges and network access can make affected MySQL servers hang or repeatedly crash. The business risk is service disruption, not data theft, based on the supplied CVSS impact.

Executive priority

Treat this as a planned remediation item unless affected MySQL systems support critical services or privileged access is weakly controlled. The main business concern is outage risk from database crashes, not confidentiality or integrity compromise in the provided evidence.

Technical view

Oracle reports the flaw in MySQL Server's Server: Optimizer component. Supported versions 8.0.19 and prior are affected. The CVSS 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 complete availability impact.

Likely exposure

Exposure is likely limited to organizations running MySQL Server 8.0.19 or earlier, especially where privileged database users can connect over network-accessible protocols.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires high privileges, reducing broad internet-scale risk but leaving insider, compromised-admin, and misconfigured-access scenarios relevant.

Researcher notes

No CWE is supplied in the bundle. Focus validation on version, privilege model, network reachability, and availability monitoring. Avoid assuming exploit availability or broader product impact beyond Oracle MySQL Server and downstream vendor advisories listed here.

Mitigation direction

  • Apply Oracle's April 2020 Critical Patch Update or vendor packages that include the MySQL fix.
  • Prioritize MySQL Server instances running 8.0.19 or earlier.
  • Check Ubuntu, Fedora, Gentoo, NetApp, or Oracle guidance for platform-specific fixed packages.
  • Restrict MySQL network access to trusted hosts and administrative paths.
  • Review privileged database accounts and remove unnecessary high-privilege access.

Validation and detection

  • Inventory MySQL Server versions and flag 8.0.19 or earlier.
  • Confirm package versions align with Oracle CPU or distribution advisory fixes.
  • Verify MySQL is not exposed beyond required trusted networks.
  • Review logs and monitoring for repeated MySQL hangs or crashes.
  • Confirm privileged database accounts are necessary and individually attributable.
Prepared
Confidence
high
Sources
6

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-2020-2892 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 (3.0)
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-2020-2892Attack 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.