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CVE Record

CVE-2021-2424: 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 8.0.25 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-2021-2424 is a denial-of-service flaw in Oracle MySQL Server stored procedure handling. A high-privileged attacker with network access could make MySQL hang or crash repeatedly, disrupting dependent applications. The provided record does not describe data theft or data modification impact.

Executive priority

Treat this as a targeted availability risk, not a broad unauthenticated compromise. Prioritize patching business-critical MySQL systems and reducing privileged network access, especially where downtime would affect customer-facing or operational services.

Technical view

Oracle lists MySQL Server 8.0.25 and prior as 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 exploitation requiring high privileges, with impact limited to availability.

Likely exposure

Exposure is most likely in environments running Oracle MySQL Server 8.0.25 or earlier, especially where high-privilege database accounts can connect over the network. Patched, isolated, and tightly administered MySQL deployments have lower exposure.

Exploitation context

The provided sources do not show active exploitation, and the KEV flag is false. Exploitation requires high privileges, but Oracle describes it as easy once the attacker has required access via multiple protocols.

Researcher notes

The record names the affected component as Server: Stored Procedure. No CWE is provided. Impact is complete denial of service only under the supplied CVSS metrics. Evidence is insufficient to claim exploitation in the wild or confidentiality/integrity impact.

Mitigation direction

  • Apply Oracle's July 2021 Critical Patch Update guidance for MySQL Server.
  • Upgrade affected MySQL Server instances beyond 8.0.25 where applicable.
  • Restrict MySQL network access to trusted administrative paths only.
  • Review and reduce high-privilege MySQL accounts.
  • Check NetApp guidance if MySQL is embedded in vendor-managed products.

Validation and detection

  • Inventory MySQL Server versions and identify 8.0.25 or earlier.
  • Confirm Oracle CPU fixes are applied to each affected instance.
  • Review network paths that permit privileged MySQL access.
  • Audit high-privilege database accounts and recent administrative logins.
  • Monitor MySQL error logs for repeated hangs, crashes, or restarts.
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-2021-2424 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-2021-2424Attack 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 Server8.0.25 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.