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CVE Record

CVE-2021-29880: IBM QRadar SIEM 7.4.3 GA - 7.4.3 Fix Pack 1 when using domains or multi-tenancy could be vulnerable to info...

IBM QRadar SIEM 7.4.3 GA - 7.4.3 Fix Pack 1 when using domains or multi-tenancy could be vulnerable to information disclosure between tenants by routing SIEM data to the incorrect domain. IBM X-Force ID: 206979.

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This flaw affects IBM QRadar SIEM 7.4.3 GA through 7.4.3 Fix Pack 1 in domain or multi-tenant configurations. SIEM data could be routed to the wrong tenant domain, exposing sensitive security events to users who should not see them.

Executive priority

Treat this as a moderate-priority confidentiality issue for multi-tenant QRadar environments. The business risk is unauthorized tenant visibility into security telemetry, which may expose sensitive investigations, assets, users, or incident details.

Technical view

The CVE describes a network-reachable information disclosure issue requiring low privileges, no user interaction, and high attack complexity. The impact is confidentiality-only: data may cross tenant boundaries because SIEM data is routed to an incorrect domain. Integrity and availability impacts are not identified in the provided sources.

Likely exposure

Exposure is likely limited to organizations running IBM QRadar SIEM 7.4.3 GA through 7.4.3 Fix Pack 1 with domains or multi-tenancy enabled. Single-tenant deployments are not described as affected in the source bundle.

Exploitation context

The CVE is not listed as CISA KEV in the provided bundle, and no cited source states active exploitation. The CVSS vector indicates exploitation requires low privileges, network access, no user interaction, and high attack complexity.

Researcher notes

The provided evidence does not include exploit details, proof-of-concept status, or exact fixed version text. Analysis should stay tied to IBM QRadar SIEM 7.4.3 GA through 7.4.3 Fix Pack 1 and the domain or multi-tenancy condition.

Mitigation direction

  • Check IBM advisory for the required fixed QRadar level or interim remediation.
  • Upgrade affected QRadar deployments according to IBM-supported guidance.
  • Review domain and multi-tenant routing configuration for unintended data sharing.
  • Restrict tenant administration and SIEM access to least privilege.
  • Increase monitoring for unexpected cross-domain event visibility.

Validation and detection

  • Inventory QRadar SIEM versions and identify 7.4.3 GA through Fix Pack 1 systems.
  • Confirm whether domains or multi-tenancy are enabled on each deployment.
  • Review tenant domain mappings for event and flow data routing errors.
  • Check logs or audit evidence for data appearing in unexpected domains.
  • Verify the deployment is remediated to IBM-recommended levels.
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-2021-29880 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/PR:L/UI:N/C:H/AV:N/I:N/S:U/AC:H/A: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
5.3CVSS 3.0MediumCVSS:3.0/PR:L/UI:N/C:H/AV:N/I:N/S:U/AC:H/A:N/E:U/RL:O/RC:C1.63.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.3Medium
CVSS 3.0 vector shape for CVE-2021-29880Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/PR:L/UI:N/C:H/AV:N/I:N/S:U/AC:H/A: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 SIEM7.4.3Listed
Weakness

CWE details

No CWE listed

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