Security readout for executives and security teams
Plain-English summary
IBM Tivoli Netcool Impact versions 7.1.0.0 through 7.1.0.17 may expose sensitive technical details through browser error messages. An unauthenticated remote attacker could use that information to plan further attacks. This is a moderate operational risk, especially for internet-accessible management or monitoring systems.
Executive priority
Treat this as a moderate-priority remediation item. It is not documented as actively exploited in the provided sources, but unauthenticated information disclosure on monitoring infrastructure can materially improve an attacker’s follow-on planning.
Technical view
CVE-2020-4239 is an unauthenticated network information disclosure issue in IBM Tivoli Netcool Impact. The CVSS 3.0 score is 5.3, with low attack complexity, no privileges, and no user interaction required. Impact is limited to confidentiality, based on detailed technical error messages returned to the browser.
Likely exposure
Exposure is limited to organizations running IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.17. Risk is higher where the application is reachable from untrusted networks or exposes detailed browser errors to unauthenticated users.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The CVSS vector indicates remote, unauthenticated exploitability, but the described outcome is information disclosure that could support later attacks rather than direct system compromise.
Researcher notes
Evidence is sparse beyond the IBM description and CVSS data. The issue is categorized as sensitive information disclosure through detailed technical browser errors. No CWE, exploit details, or exact fixed version are present in the supplied bundle.
Mitigation direction
- Identify all IBM Tivoli Netcool Impact deployments and versions.
- Review IBM support guidance for the official fix or supported upgrade path.
- Restrict access to trusted administrative networks where possible.
- Disable or suppress detailed browser error messages if IBM guidance supports it.
- Monitor exposed systems for unusual error-triggering activity.
Validation and detection
- Confirm whether any deployment runs versions 7.1.0.0 through 7.1.0.17.
- Verify that browser errors do not reveal technical details to unauthenticated users.
- Check whether IBM’s recommended fix or upgrade has been applied.
- Review access controls for internet-facing Netcool Impact interfaces.
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-2020-4239 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/S:U/I:N/UI:N/C:L/AC:L/A:N/PR:N/AV:N/RL:O/RC:C/E:U
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/S:U/I:N/UI:N/C:L/AC:L/A:N/PR:N/AV:N/RL:O/RC:C/E:U3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/S:U/I:N/UI:N/C:L/AC:L/A:N/PR:N/AV:N/RL:O/RC:C/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6128955CVE reference · x_refsource_CONFIRM
- ibm-tivoli-cve20204239-info-disc (175412)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.