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CVE Record

CVE-2021-29856: IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 could allow an authenticated usre to cause a denial of service through...

IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 could allow an authenticated usre to cause a denial of service through the WebGUI Map Creation page. IBM X-Force ID: 205685.

MediumCVSS 6.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This flaw could let a logged-in user disrupt IBM Tivoli Netcool/OMNIbus WebGUI 8.1.0 through the Map Creation page. The reported impact is denial of service, not data theft or system takeover. Business urgency depends on whether the WebGUI is internet- or broadly internally accessible and who has authenticated access.

Executive priority

Treat this as a moderate operational resilience issue. It is not described as data compromise, but it can affect monitoring availability. Remediate sooner where Netcool/OMNIbus supports critical alerting or incident response workflows.

Technical view

CVE-2021-29856 affects IBM Tivoli Netcool/OMNIbus GUI 8.1.0. The source bundle describes an authenticated denial-of-service condition in the WebGUI Map Creation page. CVSS 3.0 score is 6.5 with network attack vector, low complexity, low privileges required, unchanged scope, and high availability impact.

Likely exposure

Likely exposure is limited to organizations running IBM Tivoli Netcool/OMNIbus WebGUI 8.1.0 where authenticated users can reach the Map Creation page. Systems without this version or without user access to that WebGUI path are not shown as affected by the supplied sources.

Exploitation context

The source bundle does not indicate active exploitation, and KEV status is false. The attack requires authentication, which reduces opportunistic internet risk but still matters for insider misuse, compromised accounts, or overly broad internal access.

Researcher notes

Evidence is sparse: the public description identifies the affected version, authenticated requirement, DoS impact, and IBM X-Force ID 205685. The bundle does not provide root cause details, exploit procedure, or a named fixed version. Use IBM’s advisory as the remediation authority.

Mitigation direction

  • Check IBM advisory guidance for the official remediation path.
  • Prioritize remediation on externally reachable or broadly accessible WebGUI deployments.
  • Restrict WebGUI Map Creation access to users with a clear operational need.
  • Monitor WebGUI availability, restarts, and error patterns until remediated.

Validation and detection

  • Inventory IBM Tivoli Netcool/OMNIbus WebGUI deployments and confirm versions.
  • Verify whether version 8.1.0 is present in production or support environments.
  • Review which authenticated users can access the Map Creation page.
  • Check operational logs for unexplained WebGUI crashes, hangs, or availability incidents.
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-2021-29856 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/UI:N/A:H/S:U/C:N/PR:L/AV:N/AC:L/I:N/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
6.5CVSS 3.0MediumCVSS:3.0/UI:N/A:H/S:U/C:N/PR:L/AV:N/AC:L/I:N/RC:C/RL:O/E:U2.83.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.5Medium
CVSS 3.0 vector shape for CVE-2021-29856Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/UI:N/A:H/S:U/C:N/PR:L/AV:N/AC:L/I:N/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
IBMTivoli Netcool/OMNIbus8.1.0Listed
Weakness

CWE details

No CWE listed

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