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CVE Record

CVE-2021-20371: IBM Jazz Foundation and IBM Engineering products could allow a remote attacker to obtain sensitive informat...

IBM Jazz Foundation and IBM Engineering products could allow a remote attacker to obtain sensitive information when an error message is returned in the browser. This information could be used in further attacks against the system. IBM X-Force ID: 195516.

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Jazz Foundation and related IBM Engineering products can expose sensitive information through browser error messages. The issue is moderate severity because it affects confidentiality, requires low privileges, and could help an attacker plan later attacks rather than directly take over systems.

Executive priority

Treat as a targeted remediation item, not an emergency. Prioritize systems exposed to broad internal or external users because disclosed details may support follow-on attacks.

Technical view

CVE-2021-20371 is a network-accessible information disclosure flaw in specific IBM lifecycle management products. CVSS 3.0 is 4.3 with low attack complexity, low privileges required, no user interaction, and low confidentiality impact. The disclosed information appears tied to error output returned in the browser.

Likely exposure

Likely exposure is organizations running affected IBM Rational CLM, RELM, DOORS Next, RQM, Rhapsody Model Manager, Engineering Lifecycle Optimization, or Engineering Test Management versions listed in the bundle, especially reachable web interfaces.

Exploitation context

The bundle does not show active exploitation. KEV is false and the CVSS exploit maturity is unproven. The stated risk is that browser-displayed error details may aid further attacks against the system.

Researcher notes

Evidence is limited to the CVE description, affected product list, CVSS vector, IBM reference, and X-Force entry. No CWE is supplied, and the bundle does not include technical disclosure details or exploit evidence.

Mitigation direction

  • Review IBM support bulletin 6457739 and X-Force 195516 for product-specific remediation.
  • Prioritize remediation for internet-accessible or broadly reachable affected deployments.
  • Restrict access to affected lifecycle management interfaces to trusted users and networks.
  • Reduce sensitive browser-visible error details where supported by IBM guidance.

Validation and detection

  • Inventory IBM Jazz Foundation and Engineering Lifecycle product versions.
  • Confirm whether affected versions are deployed in production, test, or externally reachable environments.
  • Review browser-visible error responses for sensitive information exposure.
  • Verify remediation status against IBM bulletin guidance.
Prepared
Confidence
medium
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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

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CVE-2021-20371 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.3 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/PR:L/AV:N/I:N/UI:N/A:N/AC:L/S:U/C:L/RC:C/E:U/RL:O

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
4.3CVSS 3.0MediumCVSS:3.0/PR:L/AV:N/I:N/UI:N/A:N/AC:L/S:U/C:L/RC:C/E:U/RL:O2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4.3Medium
CVSS 3.0 vector shape for CVE-2021-20371Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/PR:L/AV:N/I:N/UI:N/A:N/AC:L/S:U/C:L/RC:C/E:U/RL:O

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
IBMRational Collaborative Lifecycle Management6.0.6, 6.0.6.1Listed
IBMRational Engineering Lifecycle Manager6.0.6, 6.0.6.1, 7.0, 7.0.1, 7.0.2Listed
IBMEngineering Lifecycle Optimization7.0, 7.0.1, 7.0.2Listed
IBMRational DOORS Next Generation6.0.6, 6.0.6.1, 7.0, 7.0.1, 7.0.2Listed
IBMRational Quality Manager6.0.6, 6.0.6.1Listed
IBMRational Rhapsody Model Manager6.0.6, 6.0.6.1, 7.0Listed
IBMEngineering Test Management7.0.0, 7.0.1Listed
Weakness

CWE details

No CWE listed

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