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CVE Record

CVE-2020-4926: A vulnerability in the Spectrum Scale 5.1 core component and IBM Elastic Storage System 6.1 could allow una...

A vulnerability in the Spectrum Scale 5.1 core component and IBM Elastic Storage System 6.1 could allow unauthorized access to user data or injection of arbitrary data in the communication protocol. IBM X-Force ID: 191600.

MediumCVSS 5.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This issue affects IBM Spectrum Scale 5.1 and IBM Elastic Storage System 6.1. It could allow unauthorized access to user data or arbitrary data injection in a communication protocol. Business risk is most relevant where these platforms store sensitive or regulated data.

Executive priority

Schedule remediation in the normal vulnerability management cycle, with faster handling for storage clusters containing sensitive data. The issue is not evidenced as actively exploited, but confidentiality impact is high if prerequisites are met.

Technical view

CVE-2020-4926 is a medium-severity IBM vulnerability with CVSS 5.7. The vector indicates local attack surface, high attack complexity, no privileges or user interaction required, high confidentiality impact, low integrity impact, and no availability impact. IBM X-Force tracks it as ID 191600.

Likely exposure

Exposure is limited to environments running IBM Spectrum Scale 5.1 or IBM Elastic Storage System 6.1. The CVSS local attack vector suggests internet-facing exposure is not the primary concern, but compromised hosts or local access paths matter.

Exploitation context

The provided sources do not show active exploitation. The CVSS exploit maturity is unproven, and the CVE is not listed as CISA KEV in the supplied bundle. Treat exploit evidence as incomplete rather than absent globally.

Researcher notes

Key constraints are local attack vector and high complexity. The source bundle does not provide protocol internals, exploit details, or specific fixed versions. Avoid assuming broader IBM product exposure beyond Spectrum Scale 5.1 and ESS 6.1.

Mitigation direction

  • Identify IBM Spectrum Scale 5.1 and Elastic Storage System 6.1 deployments.
  • Review IBM advisories for official remediation and supported upgrade paths.
  • Prioritize systems storing sensitive, regulated, or multi-tenant data.
  • Restrict local access to affected nodes while remediation is planned.
  • Monitor IBM X-Force and IBM support pages for updated guidance.

Validation and detection

  • Confirm product names and versions on all storage nodes.
  • Check whether IBM’s official remediation has been applied.
  • Review local account and administrative access to affected systems.
  • Look for unexpected protocol errors or data integrity anomalies.
  • Document compensating controls if patching is delayed.
Prepared
Confidence
medium
Sources
5

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-2020-4926 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
5.7 (3.0)
Known Exploited
No
Published

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

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
4Source 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
5.7CVSS 3.0MediumCVSS:3.0/PR:N/I:L/AC:H/S:U/C:H/A:N/UI:N/AV:L/E:U/RL:O/RC:C1.44.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

5.7Medium
CVSS 3.0 vector shape for CVE-2020-4926Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMSpectrum Scale5.1Listed
IBMElastic Storage System6.1Listed
Weakness

CWE details

No CWE listed

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