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CVE Record

CVE-2019-4158: IBM Security Access Manager 9.0.1 through 9.0.6 does not prove that a user's identity is correct which can...

IBM Security Access Manager 9.0.1 through 9.0.6 does not prove that a user's identity is correct which can lead to the exposure of resources or functionality to unintended actors. IBM X-Force ID: 158574.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Security Access Manager versions 9.0.1 through 9.0.6 may fail to correctly prove a user's identity. In affected deployments, someone with low privileges could gain access to resources or functionality intended for others. The issue is medium severity, with limited confidentiality and integrity impact reported.

Executive priority

Handle as a moderate identity-control risk. It is not documented here as actively exploited, but it affects an access-management product, so remediation should be scheduled promptly for any affected internet-facing or broadly reachable deployment.

Technical view

CVE-2019-4158 is an IBM Security Access Manager authentication weakness tied to X-Force ID 158574. The CVSS 3.0 vector is 5.4: network-reachable, low complexity, low privileges required, no user interaction, unchanged scope, low confidentiality and integrity impact, and no availability impact.

Likely exposure

Exposure is limited to IBM Security Access Manager 9.0.1, 9.0.2, 9.0.3, 9.0.4, 9.0.5, and 9.0.6 deployments, especially where network access and low-privilege accounts exist.

Exploitation context

The provided bundle does not show CISA KEV listing or active exploitation. CVSS exploit maturity is marked unproven. Treat exploitation as possible in exposed affected environments, but do not assume known active exploitation from these sources.

Researcher notes

No CWE is listed in the bundle. The issue appears to be improper identity verification in IBM Security Access Manager. Evidence is sufficient for affected versions and CVSS characteristics, but the bundle does not provide detailed root cause, exploit primitives, or specific fixed release names.

Mitigation direction

  • Inventory IBM Security Access Manager deployments and versions.
  • Review IBM advisory ibm10888379 for fixed versions or vendor-directed mitigations.
  • Prioritize upgrade or remediation for versions 9.0.1 through 9.0.6.
  • Restrict network access to Security Access Manager administrative and authentication interfaces.
  • Review access logs for unexpected resource access by low-privilege users.

Validation and detection

  • Confirm whether any deployment runs IBM Security Access Manager 9.0.1 through 9.0.6.
  • Verify installed build levels against IBM advisory ibm10888379.
  • Check whether low-privilege users can reach affected network-accessible interfaces.
  • Review authorization logs for cross-user or unexpected functionality access.
  • Document compensating controls if vendor remediation is not yet applied.
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

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CVE-2019-4158 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.0)
Known Exploited
No
Published

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

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
5.4CVSS 3.0MediumCVSS:3.0/PR:L/A:N/AC:L/UI:N/I:L/S:U/AV:N/C:L/RL:O/RC:C/E:U2.82.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.4Medium
CVSS 3.0 vector shape for CVE-2019-4158Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMSecurity Access Manager9.0.1, 9.0.3, 9.0.4, 9.0.2, 9.0.5, 9.0.6Listed
Weakness

CWE details

No CWE listed

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