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CVE Record

CVE-2021-2162: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Audit Plug-in).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Audit Plug-in). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of MySQL Server accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-2162 is a MySQL Server vulnerability in the Audit Plug-in component. A low-privileged attacker with network access could alter some data MySQL can access. The impact is integrity-only, not data theft or outage in the CVSS record, but unauthorized database changes can still affect business records and trust.

Executive priority

Treat this as a moderate-priority database integrity issue. Prioritize internet- or broadly network-reachable MySQL servers and systems supporting financial, customer, or operational records. It is not marked as actively exploited in the supplied data.

Technical view

Oracle lists affected MySQL Server versions as 5.7.33 and prior, and 8.0.23 and prior. The CVSS vector is AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N, indicating network attack, low complexity, required low privileges, no user interaction, and limited integrity impact.

Likely exposure

Exposure is likely where affected MySQL Server versions are still running and reachable over allowed database protocols by low-privileged users. The source names the Audit Plug-in component but does not state whether specific plugin configuration is required.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. Oracle describes the issue as easily exploitable, but exploitation requires low privileges and network access. No exploit status beyond that is supported by the bundle.

Researcher notes

The record lacks CWE detail and does not describe root cause, affected configurations, or plugin enablement requirements. Validation should stay version- and exposure-based unless Oracle or downstream vendor guidance provides more precise checks.

Mitigation direction

  • Apply Oracle April 2021 CPU guidance or a later MySQL security update.
  • Upgrade MySQL beyond 5.7.33 or 8.0.23 where applicable.
  • Restrict MySQL network access to trusted clients and application tiers.
  • Review low-privileged database accounts and remove unnecessary access.
  • Check NetApp guidance if MySQL is present through NetApp-supported products.

Validation and detection

  • Inventory MySQL Server versions across production and support environments.
  • Confirm no servers remain on 5.7.33 or earlier, or 8.0.23 or earlier.
  • Review database network exposure and allowed client paths.
  • Audit low-privileged accounts with access to affected MySQL instances.
  • Confirm vendor advisories have been applied for packaged or appliance-managed MySQL.
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-2021-2162 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
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2021-2162Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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 Server5.7.33 and prior, 8.0.23 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.