Security readout for executives and security teams
Plain-English summary
IBM Tivoli Netcool/OMNIbus_GUI 8.1.0 has a stored cross-site scripting flaw. A user with access could save JavaScript into the Web UI, causing it to run in trusted sessions and potentially expose credentials or alter what operators see.
Executive priority
Treat as a moderate-priority internal application risk. It is not marked KEV, but compromise of monitoring-console sessions could affect operator trust and credential safety.
Technical view
The issue is stored XSS in IBM Tivoli Netcool/OMNIbus_GUI 8.1.0. CVSS 3.0 is 6.4 with network attack vector, low complexity, low privileges, no user interaction, changed scope, and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to environments running IBM Tivoli Netcool/OMNIbus or OMNIbus_GUI 8.1.0, especially where lower-privileged users can create or modify Web UI content viewed by other users.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. The CVSS vector includes E:H, indicating high exploit-code maturity in the scoring source, but no weaponization details are provided here.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, IBM advisory reference, and X-Force ID 204164. The bundle does not include exact patched build numbers or detailed mitigations.
Mitigation direction
- Check IBM advisory 6471067 for the official fix or mitigation.
- Inventory Netcool/OMNIbus deployments and identify version 8.1.0 Web GUI instances.
- Restrict Web UI access to trusted users until remediation is confirmed.
- Review user-controlled Web UI content for unexpected scripts or markup.
Validation and detection
- Confirm installed Netcool/OMNIbus and Web GUI versions against IBM guidance.
- Identify roles allowed to store or modify Web UI content.
- Review application logs for unusual Web UI content changes.
- Validate remediation by confirming the IBM-recommended fixed state.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-2021-29803 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/C:L/I:L/PR:L/A:N/UI:N/S:C/AC:L/E:H/RC:C/RL:O
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.
CVSS vector scores
1 official scoreWe 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.
CVSS:3.0/AV:N/C:L/I:L/PR:L/A:N/UI:N/S:C/AC:L/E:H/RC:C/RL:O3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.4MediumVector: CVSS:3.0/AV:N/C:L/I:L/PR:L/A:N/UI:N/S:C/AC:L/E:H/RC:C/RL:O
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6471067CVE reference · x_refsource_CONFIRM
- ibm-tivoli-cve202129803-xss (204164)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.