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CVE Record

CVE-2021-29792: IBM Event Streams 10.0, 10.1, 10.2, and 10.3 could allow a user the CA private key to create their own cert...

IBM Event Streams 10.0, 10.1, 10.2, and 10.3 could allow a user the CA private key to create their own certificates and deploy them in the cluster and gain privileges of another user. IBM X-Force ID: 203450.

MediumCVSS 4.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Event Streams versions 10.0 through 10.3 had a certificate authority key exposure risk. A highly privileged user could use the CA private key to create certificates, deploy them in the cluster, and gain another user's privileges.

Executive priority

Address during the next vulnerability remediation cycle, sooner for sensitive or multi-admin clusters. Business urgency rises if many administrators, contractors, or automation systems can access cluster secrets.

Technical view

The CVSS 3.0 score is 4.7. Network reachability, low attack complexity, no user interaction, and high privileges are required. Impact is limited confidentiality, integrity, and availability loss tied to improper control of CA private key material in IBM Event Streams clusters.

Likely exposure

Exposure is limited to organizations running IBM Event Streams 10.0, 10.1, 10.2, or 10.3. The attacker must already have high privileges, so this is mainly an insider, compromised admin, or mis-scoped cluster-access risk.

Exploitation context

The source bundle does not show CISA KEV listing or public active exploitation. IBM X-Force tracks the issue as ID 203450. Treat this as a privilege-escalation control weakness, not as confirmed mass exploitation.

Researcher notes

The evidence identifies affected versions and impact but does not include CWE, detailed root cause, exploit proof, or fixed-version details in the provided bundle. Avoid assuming broader IBM products or Kubernetes distributions are affected.

Mitigation direction

  • Check IBM advisory for the official fix and supported upgrade path.
  • Prioritize moving affected 10.0-10.3 clusters to IBM-recommended fixed versions.
  • Restrict access to cluster CA private key material to required administrators only.
  • Review whether CA keys or certificates require rotation under IBM guidance.
  • Monitor for suspicious certificate creation or unexpected identity changes in clusters.

Validation and detection

  • Inventory all IBM Event Streams clusters and record exact versions.
  • Confirm whether any cluster runs 10.0, 10.1, 10.2, or 10.3.
  • Review administrative access to CA private key storage and related secrets.
  • Check audit logs for unexpected certificate deployment or identity impersonation indicators.
  • Verify remediation status against IBM advisory and X-Force ID 203450.
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-2021-29792 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.7 (3.0)
Known Exploited
No
Published

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

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
4.7CVSS 3.0MediumCVSS:3.0/A:L/UI:N/S:U/AC:L/C:L/AV:N/PR:H/I:L/RC:C/RL:O/E:U1.23.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4.7Medium
CVSS 3.0 vector shape for CVE-2021-29792Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMEvent Streams10.0, 10.1, 10.2, 10.3Listed
Weakness

CWE details

No CWE listed

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