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CVE Record

CVE-2019-4156: IBM Security Access Manager 9.0.1 through 9.0.6 uses weaker than expected cryptographic algorithms that cou...

IBM Security Access Manager 9.0.1 through 9.0.6 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 158572.

MediumCVSS 5.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

IBM Security Access Manager 9.0.1 through 9.0.6 used weaker cryptography than expected. The business risk is exposure of highly sensitive information if an attacker can meet high-complexity conditions to decrypt protected data.

Executive priority

Treat as a moderate-priority confidentiality issue. It is not reported as actively exploited, but it affects security infrastructure and could expose highly sensitive information, so remediation should be scheduled and tracked.

Technical view

CVE-2019-4156 is an IBM Security Access Manager cryptographic weakness affecting versions 9.0.1 to 9.0.6. CVSS 3.0 score is 5.9, with network attack vector, no privileges or user interaction, high attack complexity, and high confidentiality impact only.

Likely exposure

Exposure is limited to organizations running IBM Security Access Manager 9.0.1 through 9.0.6. Prioritize systems protecting authentication, access, or other sensitive data, especially internet-reachable or broadly accessible deployments.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed active exploitation. CVSS marks exploit code maturity as unproven and remediation as official, but the bundle does not name specific fixed versions.

Researcher notes

Evidence supports affected product versions, confidentiality impact, and high attack complexity. The bundle does not provide exploit mechanics, exact weak algorithms, or fixed version details, so validation should stay tied to IBM advisory data.

Mitigation direction

  • Identify all IBM Security Access Manager versions in use.
  • Review IBM advisory ibm10888379 for official remediation instructions.
  • Apply IBM-supported fixes or upgrades according to vendor guidance.
  • Reduce external exposure while remediation is planned.
  • Review logs for suspicious access to sensitive protected data.

Validation and detection

  • Confirm no production instance runs versions 9.0.1 through 9.0.6.
  • Verify remediation status against IBM advisory guidance.
  • Check asset inventory for unsupported or forgotten ISAM deployments.
  • Validate compensating access controls on affected systems.
Prepared
Confidence
high
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-2019-4156 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.9 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AC:H/UI:N/A:N/PR:N/S:U/AV:N/C:H/I:N/E:U/RC:C/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
5.9CVSS 3.0MediumCVSS:3.0/AC:H/UI:N/A:N/PR:N/S:U/AV:N/C:H/I:N/E:U/RC:C/RL:O2.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.9Medium
CVSS 3.0 vector shape for CVE-2019-4156Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AC:H/UI:N/A:N/PR:N/S:U/AV:N/C:H/I:N/E:U/RC:C/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
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.