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CVE Record

CVE-2021-2333: Vulnerability in the Oracle XML DB component of Oracle Database Server.

Vulnerability in the Oracle XML DB component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Easily exploitable vulnerability allows high privileged attacker having Alter User privilege with network access via Oracle Net to compromise Oracle XML DB. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle XML DB accessible data. CVSS 3.1 Base Score 4.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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

This flaw affects Oracle XML DB in specific Oracle Database Enterprise Edition releases. An attacker already holding high database privilege could use network access through Oracle Net to read critical XML DB-accessible data. It is not described as remotely exploitable by an unauthenticated attacker.

Executive priority

Treat as a controlled but real data-access risk. Prioritize systems storing sensitive data or exposed to broad internal networks, especially where privileged accounts are numerous or weakly governed.

Technical view

CVE-2021-2333 is a confidentiality vulnerability in Oracle XML DB for Oracle Database Enterprise Edition 12.1.0.2, 12.2.0.1, and 19c. CVSS 3.1 is 4.9: network vector, low complexity, high privileges, no user interaction, high confidentiality impact, no integrity or availability impact.

Likely exposure

Exposure is most relevant where affected Oracle Database Enterprise Edition versions are deployed, Oracle XML DB is available, and users or service accounts hold Alter User privilege with Oracle Net access.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires a high-privileged attacker with Alter User privilege and network access via Oracle Net.

Researcher notes

Evidence is limited to the CVE record and Oracle advisory reference. The key exposure condition is privileged access, not public unauthenticated reachability. No CWE, exploit details, or independent exploitation confirmation are provided.

Mitigation direction

  • Review Oracle's July 2021 Critical Patch Update guidance for this CVE.
  • Apply applicable Oracle security updates for affected Database releases.
  • Limit Oracle Net access to trusted networks and required clients.
  • Review and reduce accounts with Alter User privilege.
  • Check current Oracle support guidance for version-specific remediation.

Validation and detection

  • Inventory Oracle Database Enterprise Edition 12.1.0.2, 12.2.0.1, and 19c instances.
  • Confirm whether Oracle XML DB is present and reachable through Oracle Net.
  • Verify applicable Oracle Critical Patch Update levels against the July 2021 advisory.
  • Review accounts and roles granting Alter User privilege.
  • Check privileged access logs for unusual XML DB data access.
Prepared
Confidence
high
Sources
3

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-2333 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:H/I:N/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
2Source 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:H/I:N/A:N1.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.9Medium
CVSS 3.1 vector shape for CVE-2021-2333Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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 CorporationDatabase - Enterprise Edition12.1.0.2, 12.2.0.1, 19cListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.