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CVE Record

CVE-2021-2352: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL). 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-2021-2352 is an Oracle MySQL Server flaw that can let a highly privileged network attacker crash or hang the database. The cited impact is availability only, not data theft or tampering. Business urgency depends on whether affected MySQL systems support critical services.

Executive priority

Prioritize remediation for business-critical databases because the documented outcome is complete denial of service. This is a medium-severity issue, but outage impact can be high if affected MySQL instances support revenue, authentication, or operational workflows.

Technical view

The vulnerability affects Oracle MySQL Server 8.0.25 and prior, component Server: DDL. It is rated CVSS 4.9 with network attack vector, low complexity, high privileges required, no user interaction, and high availability impact. Successful exploitation can cause complete denial of service.

Likely exposure

Exposure is most likely where MySQL Server 8.0.25 or earlier remains deployed and accepts network access by highly privileged users over supported protocols. Systems with strict admin access controls and newer patched versions have lower exposure.

Exploitation context

The source bundle says the issue is easily exploitable but requires high privileges and network access. It does not cite public exploitation, and KEV status is false. Treat active exploitation as unconfirmed based on the provided evidence.

Researcher notes

No CWE is listed in the source bundle. Available detail identifies the DDL component and denial-of-service impact but does not provide root-cause specifics. Avoid assuming exploit availability or broader impact beyond availability without additional vendor evidence.

Mitigation direction

  • Apply Oracle July 2021 CPU guidance for affected MySQL Server deployments.
  • Upgrade MySQL Server versions listed as 8.0.25 or prior where applicable.
  • Use Fedora or downstream vendor advisories for packaged MySQL/MariaDB updates.
  • Restrict network access to MySQL administration paths and trusted operators.
  • Review privileged database accounts and remove unnecessary high-privilege access.

Validation and detection

  • Inventory MySQL Server versions and flag 8.0.25 or prior.
  • Confirm whether affected servers are reachable over network protocols.
  • Verify Oracle CPU or downstream vendor update status on each host.
  • Review database logs for repeated crashes, hangs, or unexplained restarts.
  • Check privileged account assignments against operational need.
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-2021-2352 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
5Source 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-2021-2352Attack 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.