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CVE Record

CVE-2021-38919: IBM QRadar SIEM 7.3, 7.4, and 7.5 in some senarios may reveal authorized service tokens to other QRadar users.

IBM QRadar SIEM 7.3, 7.4, and 7.5 in some senarios may reveal authorized service tokens to other QRadar users. IBM X-Force ID: 210021

MediumCVSS 5.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM QRadar SIEM could expose authorized service tokens to other QRadar users in some scenarios. That matters because tokens may grant access to QRadar services or integrations. The public bundle rates this medium, with high confidentiality impact but high attack complexity and no stated integrity or availability impact.

Executive priority

Prioritize during normal vulnerability remediation, faster for QRadar systems with broad user access or sensitive integrations. The SIEM is security-critical infrastructure, so token exposure can undermine monitoring trust even without confirmed exploitation.

Technical view

CVE-2021-38919 affects IBM QRadar SIEM 7.3.3, 7.4.3, and 7.5.0. The issue is information disclosure of authorized service tokens. CVSS v3.0 is 5.9 with network attack vector, high complexity, no user interaction, and high confidentiality impact.

Likely exposure

Exposure is most likely in organizations running the listed QRadar SIEM versions, especially environments with multiple QRadar users and service tokens. The source bundle does not define the exact scenarios, token scope, or affected configurations.

Exploitation context

The bundle does not cite active exploitation, and KEV status is false. CVSS marks exploit maturity as unproven. Treat this as a credible confidentiality risk, not as confirmed in-the-wild exploitation.

Researcher notes

Public evidence identifies affected versions and impact but not the precise disclosure path. Do not assume exploitability beyond the published CVSS and IBM wording. Validate exposure against IBM guidance and local QRadar configuration.

Mitigation direction

  • Review IBM advisory for version-specific remediation guidance.
  • Inventory QRadar SIEM 7.3.3, 7.4.3, and 7.5.0 deployments.
  • Apply only IBM-confirmed fixes, updates, or workarounds.
  • Rotate service tokens if exposure is suspected.
  • Limit QRadar user access to operationally necessary accounts.

Validation and detection

  • Confirm QRadar SIEM version and build across all deployments.
  • Identify whether authorized service tokens are configured or used.
  • Review QRadar user roles and recent access to token-related views.
  • Check IBM X-Force and support advisory for updated guidance.
  • Look for unusual use of QRadar service tokens.
Prepared
Confidence
medium
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-2021-38919 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.9 (3.0)
Known Exploited
No
Published

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

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
5.9CVSS 3.0MediumCVSS:3.0/I:N/PR:N/S:U/UI:N/A:N/C:H/AC:H/AV:N/E:U/RL:O/RC:C2.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.9Medium
CVSS 3.0 vector shape for CVE-2021-38919Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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.