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CVE Record

CVE-2020-2780: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 5.6.47 and prior, 5.7.29 and prior and 8.0.19 and prior. Easily exploitable 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 hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-2780 is a MySQL Server denial-of-service vulnerability. A low-privileged user who can reach MySQL over the network may cause the server to hang or crash repeatedly, disrupting applications that depend on the database. The sources do not indicate data theft or active exploitation.

Executive priority

Handle as a medium-priority availability risk. It can interrupt dependent services but the provided evidence does not show confidentiality or integrity impact. Prioritize externally reachable or business-critical databases, especially if older MySQL branches remain in service.

Technical view

Oracle describes the issue in MySQL Server DML affecting 5.6.47 and prior, 5.7.29 and prior, and 8.0.19 and prior. CVSS 3.0 is 6.5: network exploitable, low complexity, low privileges required, no user interaction, availability impact only.

Likely exposure

Exposure is most likely where affected MySQL Server versions are still running and reachable by low-privileged database users over network-accessible protocols. Internet exposure increases urgency, but the source bundle does not identify specific deployment patterns beyond Oracle MySQL Server and downstream vendor packages.

Exploitation context

The CVE record says exploitation is easy for a low-privileged network attacker, but KEV is false and the supplied sources do not state active exploitation. Treat this as a reliable service-disruption risk, not as a confirmed data compromise issue.

Researcher notes

The public bundle gives limited root-cause detail: component Server:DML, no CWE, and availability-only CVSS. Avoid assuming exploit mechanics or affected forks not named in sources. Validation should focus on version exposure, network reachability, privileges, and vendor patch status.

Mitigation direction

  • Upgrade MySQL Server using Oracle’s April 2020 CPU guidance or applicable distribution packages.
  • Check Ubuntu, Fedora, Gentoo, and NetApp advisories where those platforms are in use.
  • Prioritize systems supporting customer-facing or revenue-critical applications.
  • Reduce unnecessary network reachability to MySQL while patching is pending.
  • Ensure database accounts follow least-privilege access appropriate to application needs.

Validation and detection

  • Inventory MySQL Server versions across production, staging, and managed appliances.
  • Flag 5.6.47 and prior, 5.7.29 and prior, and 8.0.19 and prior.
  • Confirm package remediation against Oracle or the relevant OS vendor advisory.
  • Review whether low-privileged users can reach affected servers over the network.
  • Check monitoring for unexplained MySQL hangs, crashes, or repeated restarts.
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-2020-2780 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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
9Source 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
6.5CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.5Medium
CVSS 3.0 vector shape for CVE-2020-2780Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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 Server5.6.47 and prior, 5.7.29 and prior, 8.0.19 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.