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CVE Record

CVE-2021-38939: IBM QRadar SIEM 7.3, 7.4, and 7.5 stores potentially sensitive information in log files that could be read...

IBM QRadar SIEM 7.3, 7.4, and 7.5 stores potentially sensitive information in log files that could be read by an user with access to creating domains. IBM X-Force ID: 211037.

LowCVSS 3.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

IBM QRadar SIEM versions 7.3.3, 7.4.3, and 7.5.0 may write potentially sensitive information into log files. The reported access path involves a user with domain-creation access. Business urgency is limited but real because SIEM logs can contain operational security context.

Executive priority

Treat as a low-severity remediation item for QRadar environments, especially where many users can create domains. It should be tracked and fixed through normal patch governance, not handled as an emergency absent new exploitation evidence.

Technical view

CVE-2021-38939 is an IBM QRadar SIEM information disclosure issue. Sources state potentially sensitive data is stored in log files readable by a user with access to creating domains. CVSS 3.0 score is 3.7 with confidentiality impact only, high attack complexity, and no integrity or availability impact.

Likely exposure

Exposure is likely limited to organizations running IBM QRadar SIEM 7.3.3, 7.4.3, or 7.5.0 where users have domain-creation access. Source evidence does not identify other IBM products or broader versions.

Exploitation context

The source bundle does not show CISA KEV listing or public exploitation evidence. IBM X-Force marks exploit maturity as unproven in the provided CVSS temporal vector.

Researcher notes

Evidence is narrow: affected product, versions, CVSS vector, and disclosure condition are known, but the bundle does not include detailed log fields, exact access paths, or fixed build numbers. Avoid assuming exploitability beyond the stated domain-creation access scenario.

Mitigation direction

  • Review IBM advisory for fixed levels or official remediation guidance.
  • Inventory QRadar SIEM versions and prioritize listed affected releases.
  • Restrict domain-creation privileges to users with a clear operational need.
  • Limit QRadar log file access to approved administrators only.
  • Review log retention and handling for potentially sensitive information.

Validation and detection

  • Confirm whether QRadar SIEM 7.3.3, 7.4.3, or 7.5.0 is deployed.
  • Identify users or roles with domain-creation access.
  • Verify QRadar log file permissions align with least privilege.
  • Check IBM advisory and X-Force entry for current remediation details.
  • Document whether logs contain sensitive information using approved internal procedures.
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-2021-38939 mapping review

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Vulnerability profileCVE Program record
Severity
Low
CVSS
3.7 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:H/C:L/S:U/PR:N/I:N/A:N/UI:N/RC:C/E:U/RL:O

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
3.7CVSS 3.0LowCVSS:3.0/AV:N/AC:H/C:L/S:U/PR:N/I:N/A:N/UI:N/RC:C/E:U/RL:O2.21.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

3.7Low
CVSS 3.0 vector shape for CVE-2021-38939Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:H/C:L/S:U/PR:N/I:N/A:N/UI:N/RC:C/E:U/RL:O

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
IBMQRadar SIEM7.3.3, 7.4.3, 7.5.0Listed
Weakness

CWE details

No CWE listed

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