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CVE Record

CVE-2021-2215: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Stored Procedure).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Stored Procedure). 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

This is a denial-of-service flaw in Oracle MySQL Server 8.0.23 and earlier. A highly privileged user who can reach MySQL over the network could crash or hang the server. Sources do not indicate data theft or tampering, but service interruption could affect applications relying on the database.

Executive priority

Treat this as a moderate operational resilience issue. It is unlikely to be an unauthenticated internet-scale breach path, but unpatched affected databases can be crashed by privileged users, disrupting dependent business services.

Technical view

Oracle describes CVE-2021-2215 in the MySQL Server Stored Procedure component. The CVSS vector is network, low complexity, high privileges, no user interaction, unchanged scope, and high availability impact only. Successful exploitation can cause a hang or frequently repeatable crash.

Likely exposure

Exposure is mainly MySQL Server 8.0.23 and prior reachable by high-privileged database users over supported network protocols. Risk is lower where privileged database access is tightly controlled and MySQL is not exposed beyond trusted systems.

Exploitation context

The provided sources do not state active exploitation, public exploit availability, or CISA KEV listing. The flaw is described as easily exploitable, but it requires high privileges, making insider misuse or compromised privileged database accounts the main concern.

Researcher notes

Evidence is limited to Oracle, CVE, and NetApp advisory data. No CWE, exploit details, or fixed version is included in the source bundle. The important validation questions are version, privilege exposure, network reachability, and whether vendor CPU guidance has been applied.

Mitigation direction

  • Review Oracle's April 2021 Critical Patch Update guidance for MySQL Server.
  • Upgrade affected MySQL Server deployments using vendor-approved packages or maintenance releases.
  • Restrict MySQL network access to trusted application hosts and administration networks.
  • Review and minimize high-privilege MySQL accounts.
  • Check NetApp guidance if MySQL is embedded in or supports NetApp products.

Validation and detection

  • Inventory MySQL Server instances and identify versions 8.0.23 and prior.
  • Confirm whether affected servers accept network connections from untrusted or broad internal segments.
  • Audit accounts with high MySQL privileges and remove unnecessary access.
  • Verify patch status against Oracle CPU guidance and vendor package metadata.
  • Monitor database availability logs for unexplained hangs or repeated crashes.
Prepared
Confidence
high
Sources
4

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-2021-2215 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
3Source 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-2021-2215Attack 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.