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CVE Record

CVE-2022-21455: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PAM Auth Plugin).

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PAM Auth Plugin). Supported versions that are affected are 8.0.28 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 creation, deletion or modification access to critical data or all MySQL Server accessible data. CVSS 3.1 Base Score 4.9 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N).

MediumCVSS 4.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-21455 affects Oracle MySQL Server 8.0.28 and earlier in the PAM authentication plugin. A highly privileged network attacker could alter critical MySQL-accessible data. The impact is integrity-focused, not confidentiality or availability, and the provided sources do not show known active exploitation.

Executive priority

Handle as a moderate-priority database integrity risk. It is not reported as actively exploited in the provided sources, but affected MySQL systems with critical data or broad privileged access should be patched and reviewed promptly.

Technical view

Oracle describes an easily exploitable MySQL Server PAM Auth Plugin issue reachable over multiple network protocols. The CVSS 3.1 vector is AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N, scoring 4.9. Successful exploitation can allow unauthorized creation, deletion, or modification of critical data or all MySQL Server accessible data.

Likely exposure

Exposure is most likely where MySQL Server 8.0.28 or earlier is still deployed and the PAM Auth Plugin is relevant. Risk is reduced by the requirement for high privileges, but systems holding critical data still warrant prompt review.

Exploitation context

The provided sources say exploitation is easy once the attacker has high privileges and network access. They do not identify public exploitation, proof-of-concept activity, or CISA KEV listing. Treat active exploitation status as unconfirmed from this bundle.

Researcher notes

No CWE is provided in the bundle. The vulnerability is integrity-only by CVSS, requires high privileges, and affects supported MySQL Server versions 8.0.28 and prior. NetApp published a confirming advisory, but this bundle does not provide additional exploit detail.

Mitigation direction

  • Inventory MySQL Server instances and identify versions 8.0.28 or earlier.
  • Review Oracle July 2022 CPU guidance for the applicable MySQL Server update path.
  • Prioritize systems using or depending on the PAM Auth Plugin.
  • Restrict network access to MySQL from trusted administrative paths only.
  • Review privileged MySQL accounts and remove unnecessary high-privilege access.

Validation and detection

  • Confirm MySQL Server versions across production, staging, and managed database estates.
  • Determine whether the PAM Auth Plugin is installed, configured, or required.
  • Check whether Oracle July 2022 CPU fixes are applied to affected instances.
  • Review privileged account activity for unexpected data creation, deletion, or modification.
  • Confirm compensating network controls limit access to MySQL services.
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-2022-21455 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:H/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
4.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N1.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.9Medium
CVSS 3.1 vector shape for CVE-2022-21455Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/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 Server8.0.28 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.