CVE-2020-4927

User-data access and protocol-data injection

Published Mar 15, 2023 · Updated Feb 26, 2025

Information disclosure in IBM Spectrum Scale 5.0.5.0 through 5.1.6.1 allows local users to access user data through the core protocol. IBM has not published the core component's faulty operation or how arbitrary data enters the communication protocol. Only clusters that host file systems are affected; client-only clusters that mount file systems owned by other clusters are not affected.

CVSS severity5.7
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in IBM Spectrum Scale 5.0.5.0 through 5.1.6.1 allows local users to access user data through the core protocol. IBM has not published the core component's faulty operation or how arbitrary data enters the communication protocol. Only clusters that host file systems are affected; client-only clusters that mount file systems owned by other clusters are not affected.

The record

CVE
CVE-2020-4927
Published
Mar 15, 2023
Updated
Feb 26, 2025
Vendor
IBM
Product
IBM Spectrum Scale
Classifications
CWE-200
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.0.5.0 <5.1.6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM Spectrum Scaleversion=5.0.5.0 <5.1.6.1

Published CVSS scores

8.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
5.7IBM CorporationCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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