CVE-2020-4378Network attack vector

Unauthorized actions via crafted HTTP POST

Published May 27, 2020 · Updated Sep 16, 2024

Authorization bypass in the IBM Spectrum Scale GUI 5.0.0.0 through 5.0.4.4 allows remote authenticated users to perform unauthorized actions. A specially crafted HTTP POST reaches the vulnerable GUI path, but IBM has not disclosed the endpoint or authorization check that fails. Exploitation requires a privileged authenticated GUI account and can alter protected state; no confidentiality or availability impact is reported.

CVSS severity4.9
Medium
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in the IBM Spectrum Scale GUI 5.0.0.0 through 5.0.4.4 allows remote authenticated users to perform unauthorized actions. A specially crafted HTTP POST reaches the vulnerable GUI path, but IBM has not disclosed the endpoint or authorization check that fails. Exploitation requires a privileged authenticated GUI account and can alter protected state; no confidentiality or availability impact is reported.

The record

CVE
CVE-2020-4378
Published
May 27, 2020
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Spectrum Scale
Classifications
Unavailable
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 27, 2020CVE 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?

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

  1. Affected versionversion=5.0.0
  2. Affected versionversion=5.0.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

IBM · IBM Spectrum Scaleversion=5.0.0; version=5.0.4.4

Published CVSS scores

4.9IBMCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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