Security readout for executives and security teams
Plain-English summary
IBM Tivoli Netcool/Impact has an insecure SSH server configuration in the cited versions. The issue may allow an unauthenticated network attacker to decrypt highly sensitive information, but exploitation requires high attack complexity. No source in the bundle reports active exploitation.
Executive priority
Schedule remediation through normal vulnerability management, with faster handling for internet-reachable or sensitive monitoring environments. The issue is moderate severity, confidentiality-focused, and not cited as actively exploited in the supplied sources.
Technical view
CVE-2021-29794 affects IBM Tivoli Netcool/Impact 7.1.0.20 and 7.1.0.21 per the description. The weakness is weaker-than-expected SSH cryptography. CVSS 3.0 score is 5.9, with network attack vector, no privileges required, no user interaction, high complexity, and confidentiality impact only.
Likely exposure
Exposure is likely limited to organizations running IBM Tivoli Netcool/Impact at the affected fix levels with the impacted SSH service reachable over a network. Exact installed versions should be validated against IBM's advisory because the bundle contains version metadata that should be confirmed.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle, and the CVSS exploit maturity is unproven. Treat this as a confidentiality risk where reachable SSH services and sensitive operational data raise business impact.
Researcher notes
Do not assume exploitability beyond the sources. Focus validation on version, SSH exposure, and cryptographic configuration. The bundle does not provide exploit details, CWE mapping, or a named fixed version, so anchor remediation to IBM's advisory.
Mitigation direction
- Review IBM advisory 6469953 for the official remediation or fixed level.
- Prioritize remediation for Netcool/Impact 7.1.0.20 and 7.1.0.21 instances.
- Restrict SSH access to trusted administrative networks while remediation is pending.
- Review SSH cryptographic settings against IBM guidance and current internal standards.
Validation and detection
- Inventory all IBM Tivoli Netcool/Impact deployments and record exact fix levels.
- Confirm whether versions 7.1.0.20 or 7.1.0.21 are present.
- Check whether the Netcool/Impact SSH service is network-reachable from untrusted segments.
- After remediation, verify weak SSH algorithms are no longer offered.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-29794 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
- 5.9 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/C:H/AV:N/PR:N/I:N/AC:H/A:N/S:U/UI:N/RC:C/RL:O/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/C:H/AV:N/PR:N/I:N/AC:H/A:N/S:U/UI:N/RC:C/RL:O/E:U2.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.9MediumVector: CVSS:3.0/C:H/AV:N/PR:N/I:N/AC:H/A:N/S:U/UI:N/RC:C/RL:O/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://www.ibm.com/support/pages/node/6469953CVE reference · x_refsource_CONFIRM
- ibm-tivoli-cve202129794-info-disc (203556)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.