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CVE Record

CVE-2021-29750: IBM QRadar SIEM 7.3 and 7.4 uses weaker than expected cryptographic algorithms that could allow an attacker...

IBM QRadar SIEM 7.3 and 7.4 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 201778.

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 7.3 and 7.4 used weaker cryptography than expected, creating a risk that an attacker could decrypt highly sensitive information. The issue is rated medium, but confidentiality impact is high for affected deployments because QRadar often stores security telemetry and investigation data.

Executive priority

Moderate priority. This is not presented as actively exploited, but affected QRadar systems may hold highly sensitive security data. Remediate during the next security maintenance window, sooner if the system is broadly reachable or contains regulated data.

Technical view

CVE-2021-29750 affects IBM QRadar SIEM 7.3 and 7.4. CVSS 3.0 score is 5.9: network-reachable, no privileges, no user interaction, high attack complexity, high confidentiality impact, and no integrity or availability impact. IBM X-Force tracks it as ID 201778.

Likely exposure

Exposure is limited to organizations still running IBM QRadar SIEM 7.3 or 7.4. Risk is higher where QRadar interfaces are reachable from broader networks or where stored logs contain sensitive operational, user, or security investigation data.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS vector lists exploit maturity as unproven and attack complexity as high. Treat this as a confidentiality risk requiring remediation, not as evidence of current mass exploitation.

Researcher notes

The bundle does not identify the specific weak algorithm, component, CWE, or CPEs. Analysis should stay anchored to IBM QRadar SIEM 7.3 and 7.4, IBM advisory 6488945, and IBM X-Force ID 201778.

Mitigation direction

  • Identify all IBM QRadar SIEM 7.3 and 7.4 deployments.
  • Review IBM advisory 6488945 for supported fixes or vendor workarounds.
  • Prioritize remediation for systems storing sensitive security telemetry.
  • Restrict QRadar access to trusted administrative networks.
  • Monitor IBM X-Force ID 201778 for updated vendor guidance.

Validation and detection

  • Confirm QRadar version and build on each deployment.
  • Check whether affected QRadar services are network-accessible.
  • Verify remediation status against IBM advisory 6488945.
  • Document sensitive data types stored in affected QRadar instances.
  • Review change records for applied IBM fixes or upgrades.
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.

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CVE-2021-29750 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/S:U/A:N/UI:N/AV:N/C:H/AC:H/I:N/PR: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
5.9CVSS 3.0MediumCVSS:3.0/S:U/A:N/UI:N/AV:N/C:H/AC:H/I:N/PR:N/RC:C/E:U/RL:O2.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.9Medium
CVSS 3.0 vector shape for CVE-2021-29750Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/S:U/A:N/UI:N/AV:N/C:H/AC:H/I:N/PR: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, 7.4Listed
Weakness

CWE details

No CWE listed

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