CVE-2026-81540Network attack vector

Cross-tenant ruleset overwrite via path traversal

Published Sep 10, 2026 · Updated Sep 10, 2026

Path traversal in IBM DataStage on Cloud Pak for Data 5.4.0.0 allows remote authenticated users to overwrite other tenants' ruleset files. The ruleset file-handling path accepts a user-controlled path without confining resolution to the authenticated tenant's storage area. Exploitation requires authenticated network access and changes another tenant's ruleset data; no code execution or broader file access is reported.

CVSS severityUnavailable
Unscored
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in IBM DataStage on Cloud Pak for Data 5.4.0.0 allows remote authenticated users to overwrite other tenants' ruleset files. The ruleset file-handling path accepts a user-controlled path without confining resolution to the authenticated tenant's storage area. Exploitation requires authenticated network access and changes another tenant's ruleset data; no code execution or broader file access is reported.

The record

CVE
CVE-2026-81540
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
IBM
Product
IBM DataStage on Cloud Pak for Data
Classifications
CWE-73, CWE-22, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record 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=5.4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM DataStage on Cloud Pak for Dataversion=5.4.0.0

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

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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