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CVE Record

CVE-2021-2410: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). 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-2021-2410 is a MySQL Server availability flaw. A highly privileged attacker who can reach the database over the network could cause MySQL to hang or repeatedly crash. The cited CVSS data does not indicate data theft or data modification, but a database outage can still disrupt dependent applications.

Executive priority

Treat this as a service reliability risk, not a confirmed data breach issue. Prioritize patching exposed or business-critical MySQL systems, especially where privileged accounts are broadly assigned or database outages would affect revenue, operations, or customer access.

Technical view

Oracle describes this as a MySQL Server Optimizer vulnerability affecting supported MySQL Server versions 8.0.25 and prior. It is network reachable over multiple protocols, low complexity, requires high privileges, and needs no user interaction. Impact is complete denial of service, with no stated confidentiality or integrity impact.

Likely exposure

Exposure is most relevant where MySQL Server 8.0.25 or earlier is reachable by users or services holding high database privileges. Internet exposure increases operational risk, but the source bundle requires high privileges for exploitation.

Exploitation context

The source bundle does not report active exploitation, and the CVE is not listed as KEV. Exploitation requires high privileges plus network access to MySQL Server, so the main concern is misuse of powerful accounts or compromise of an already privileged database user.

Researcher notes

Evidence supports a high-privilege, network-reachable denial-of-service condition in MySQL Server Optimizer. No CWE, exploit details, or active exploitation claims are provided in the bundle. NetApp is cited as a confirming advisory, but affected NetApp product details are not included here.

Mitigation direction

  • Identify MySQL Server instances running 8.0.25 or earlier.
  • Apply Oracle July 2021 CPU fixes or later vendor-supported updates.
  • Restrict MySQL network access to trusted administrative and application paths.
  • Reduce high-privilege MySQL accounts to documented operational need.
  • Monitor MySQL availability for unexplained hangs or repeatable crashes.

Validation and detection

  • Inventory MySQL Server versions and flag 8.0.25 or earlier.
  • Confirm patched systems no longer report affected versions.
  • Review privileged MySQL accounts with network access.
  • Check database and service monitoring for unexplained crash patterns.
  • Verify vendor advisories for any platform-specific guidance.
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-2021-2410 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-2021-2410Attack 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.