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CVE Record

CVE-2021-2196: 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 8.0.23 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

CVE-2021-2196 is a denial-of-service flaw in Oracle MySQL Server. A high-privileged user who can connect to MySQL over the network could make the server hang or repeatedly crash. The known impact is availability loss, not data theft or data modification.

Executive priority

Treat this as a moderate operational resilience issue. Prioritize remediation on business-critical databases and exposed administrative networks, but it is lower urgency than unauthenticated remote code execution or confirmed exploited vulnerabilities.

Technical view

The issue affects Oracle MySQL Server 8.0.23 and prior in the Server: DML component. CVSS 3.1 is 4.9 with network access, low attack complexity, high privileges required, no user interaction, unchanged scope, and high availability impact only.

Likely exposure

Exposure is most relevant for organizations running MySQL Server 8.0.23 or earlier, including packaged or embedded deployments. Risk depends on whether high-privileged database accounts can connect over reachable network protocols.

Exploitation context

The provided sources do not show active exploitation, and the CVE is not listed as KEV. Exploitation requires high privileges, so the realistic concern is abuse by compromised, overprivileged, or malicious database accounts.

Researcher notes

No CWE is listed in the provided record. Public details identify the affected component and impact but not root-cause mechanics or a standalone workaround. Avoid assuming exploit availability or affected downstream products beyond cited vendor advisories.

Mitigation direction

  • Apply Oracle CPU or operating-system vendor updates for affected MySQL deployments.
  • Check NetApp guidance if using products that may include affected MySQL components.
  • Restrict network access to MySQL administrative or high-privileged accounts.
  • Review and reduce unnecessary high-privilege database accounts.
  • Monitor vendor advisories for any named workaround or fixed-version clarification.

Validation and detection

  • Inventory MySQL Server instances and identify versions 8.0.23 or earlier.
  • Confirm patched package versions against Oracle or distribution advisories.
  • Review database account privileges and network paths to MySQL services.
  • Check service logs for unexplained hangs, restarts, or repeated crashes.
  • Verify third-party appliances or platforms do not bundle vulnerable MySQL versions.
Prepared
Confidence
high
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-2021-2196 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
6Source 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-2021-2196Attack 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 Server8.0.23 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.