CVE-2020-4926

Data access and injection via unauthorized protocol messages

Published May 24, 2022 · Updated Sep 16, 2024

Improper authorization in IBM Spectrum Scale 5.1 and IBM Storage Scale System 6.1 allows local users to access or inject protocol data. The core component accepts arbitrary data sent to CLI commands and the daemon over its internal communication protocol without enforcing authorization. Exploitation requires local access and high-complexity conditions; successful abuse exposes user data or alters protocol data without interrupting service.

CVSS severity5.7
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in IBM Spectrum Scale 5.1 and IBM Storage Scale System 6.1 allows local users to access or inject protocol data. The core component accepts arbitrary data sent to CLI commands and the daemon over its internal communication protocol without enforcing authorization. Exploitation requires local access and high-complexity conditions; successful abuse exposes user data or alters protocol data without interrupting service.

The record

CVE
CVE-2020-4926
Published
May 24, 2022
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Spectrum Scale
Classifications
CWE-862
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM Spectrum Scaleversion=5.1
IBM · IBM Storage Scale Systemversion=6.1

Published CVSS scores

9.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.7IBM CorporationCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
6.4NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:P/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.

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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-862Missing Authorization

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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