CVE-2026-16338Network attack vector

Authenticated arbitrary file write via path traversal

Published Sep 14, 2026 · Updated Sep 14, 2026

Path traversal in IBM DataStage on Cloud Pak for Data 5.4.0.0 allows remote authenticated users to write arbitrary files. IBM has not identified the affected endpoint or function, but states that file paths are improperly validated before files are written to shared storage. Access requires a valid authenticated account, and successful exploitation permits arbitrary file creation or overwrite on that shared storage.

CVSS severity9.9
Critical
EPSS probability0.61%
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 write arbitrary files. IBM has not identified the affected endpoint or function, but states that file paths are improperly validated before files are written to shared storage. Access requires a valid authenticated account, and successful exploitation permits arbitrary file creation or overwrite on that shared storage.

The record

CVE
CVE-2026-16338
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
IBM
Product
IBM DataStage on Cloud Pak for Data
Classifications
CWE-22
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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

9.9IBM PSIRTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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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