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Tivoli Netcool Impact CVE-2021-29794

HIGH
Use of a Broken or Risky Cryptographic Algorithm (CWE-327)
2021-07-12 psirt@us.ibm.com
7.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Approved algorithm selection
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.7% exploitation probability (EPSS)

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AnalysisAI

IBM Tivoli Netcool/Impact 7.1.0.20 and 7.1.0.21 uses an insecure SSH server configuration which enables weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-327. IBM Tivoli Netcool/Impact 7.1.0.20 and 7.1.0.21 uses an insecure SSH server configuration which enables weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 203556. Affected products include: Ibm Tivoli Netcool\/Impact.

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionNVD

IBM Tivoli Netcool/Impact 7.1.0.20 and 7.1.0.21 uses an insecure SSH server configuration which enables weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 203556.

Threat Intelligence Overview

EPSS Score
0.7%
Top 51% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.7%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:ibm:tivoli_netcool\/impact:7.1.0.20:*:*:*:*:*:*:*
cpe:2.3:a:ibm:tivoli_netcool\/impact:7.1.0.21:*:*:*:*:*:*:*
CVE-2020-4238 HIGH
8.8 Mar 31

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.17 is vulnerable to cross-site request forgery which could allow an atta

CVE-2020-4237 HIGH
8.8 Mar 31

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.17 is vulnerable to cross-site request forgery which could allow an atta

CVE-2019-4103 HIGH
8.0 Jun 17

IBM Tivoli Netcool/Impact 7.1.0 allows for remote execution of command by low privileged User. Rated high severity (CVSS

CVE-2020-4236 MEDIUM
6.5 Mar 31

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.17 could allow an authenticated user to cause a denial of service due to

CVE-2020-4849 MEDIUM
6.1 Dec 15

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.19 Interim Fix 7 could allow a remote attacker to bypass security restri

CVE-2026-4788 MEDIUM
5.5 Apr 08

Sensitive information disclosure in IBM Tivoli Netcool Impact versions 7.1.0.0 through 7.1.0.37 allows local attackers w

CVE-2020-4235 MEDIUM
5.4 Mar 31

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.17 is vulnerable to cross-site scripting. Rated medium severity (CVSS 5.

CVE-2019-4569 MEDIUM
5.4 Nov 22

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.16 is vulnerable to cross-site scripting. Rated medium severity (CVSS 5.

CVE-2020-4239 MEDIUM
5.3 Mar 31

IBM Tivoli Netcool Impact 7.1.0.0 through 7.1.0.17 could allow a remote attacker to obtain sensitive information when a

CVE-2019-4570 MEDIUM
5.3 Nov 22

IBM Tivoli Netcool Impact 7.1.0 through 7.1.0.16 generates an error message that includes sensitive information about it

CVE-2014-6161 LOW
3.5 Nov 08

Cross-site scripting (XSS) vulnerability in IBM Tivoli Netcool/Impact 6.1.1 before 6.1.1.1-TIV-NCI-IF0001 allows remote

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