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CVE Record

CVE-2020-2761: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.0.18 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-2020-2761 can let a highly privileged user who can reach MySQL over the network crash or hang the database service. The reported impact is availability only, not data theft or tampering. Business urgency depends on whether older MySQL servers are exposed to powerful accounts.

Executive priority

Treat as a targeted availability risk rather than a broad data breach issue. Prioritize patching older MySQL systems that support critical services or allow broad privileged access.

Technical view

Oracle describes a MySQL Server Security: Privileges vulnerability affecting supported versions 8.0.18 and prior. CVSS 3.0 score is 4.9 with network access, low attack complexity, high privileges required, no user interaction, and high availability impact only.

Likely exposure

Exposure is most likely in environments still running Oracle MySQL Server 8.0.18 or earlier, including downstream packages referenced by Fedora, Gentoo, or NetApp advisories. Risk is lower where administrative MySQL access is tightly restricted.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires a high-privileged attacker with network access via multiple protocols, limiting broad internet-scale risk but still relevant for insider, compromised admin, or lateral-movement scenarios.

Researcher notes

Evidence is limited to advisory-level descriptions. The weakness is in MySQL Server privileges handling, but no CWE, exploit details, or active exploitation claim is provided in the source bundle.

Mitigation direction

  • Apply Oracle April 2020 CPU or applicable vendor package updates.
  • Prioritize MySQL Server 8.0.18 and earlier instances.
  • Restrict administrative MySQL accounts to trusted networks and users.
  • Review NetApp, Fedora, or Gentoo guidance where those distributions apply.
  • Ensure database availability monitoring alerts on hangs and repeated crashes.

Validation and detection

  • Inventory MySQL Server versions across production and staging.
  • Confirm affected systems are updated beyond 8.0.18 or vendor-fixed packages.
  • Review who has high-privilege MySQL access and from where.
  • Check database logs and monitoring for unexplained hangs or crashes.
  • Verify downstream appliance or OS vendor advisories for embedded MySQL exposure.
Prepared
Confidence
high
Sources
8

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-2020-2761 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
7Source 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-2020-2761Attack 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 Server8.0.18 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.