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IBM DataStage CVE-2026-16346

| EUVDEUVD-2026-84977 CRITICAL
Improper Authorization (CWE-285)
2026-09-22 ibm GHSA-8vc6-mwhw-f8wg
9.9
CVSS 3.1 · Vendor: ibm
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Severity by source

Vendor (ibm) PRIMARY
9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network-reachable, low-complexity OS command injection needing an authenticated account (PR:L); command execution confined to the DataStage host argues S:U (vs vendor S:C) with full C/I/A impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (ibm).

CVSS VectorVendor: ibm

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Metadata Corrected
Sep 22, 2026 - 22:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 22, 2026 - 22:08 vuln.today
CVE Published
Sep 22, 2026 - 21:21 cve.org
CRITICAL 9.9

DescriptionCVE.org

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.

AnalysisAI

Authenticated OS command execution in IBM DataStage on Cloud Pak for Data 5.4.0.0 lets a remote attacker with a valid account plant special elements in a DataStage input path that are passed unsanitized into an operating-system command, resulting in arbitrary command execution with the privileges of the DataStage service. The prerequisite is a legitimate authenticated session (CVSS PR:L) on a network-reachable instance (AV:N/AC:L, UI:N), which limits realistic exposure to authorized users, compromised credentials, or malicious insiders on unpatched 5.4.0.0 deployments. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Impact
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Vulnerability AssessmentAI

Exploitation Requires a valid authenticated account on an IBM DataStage on Cloud Pak for Data 5.4.0.0 instance (CVSS PR:L); no user interaction is needed (UI:N) and the vector is network-reachable (AV:N/AC:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor CVSS of 9.9 (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) rates this near-maximum, but two signals temper real-world urgency. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Patch available per vendor advisory: IBM has published a fix through its support channel at https://www.ibm.com/support/pages/node/7288649, so the primary action is to apply the vendor-supplied update to any IBM DataStage on Cloud Pak for Data 5.4.0.0 deployment and to confirm the exact fixed build level with IBM before closing the finding, since no explicit fix version is stated in the available data. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all IBM DataStage on Cloud Pak for Data 5.4.0.0 instances, restrict network reachability to trusted management networks where feasible, review active accounts for least privilege and disable unused or shared credentials, and enable enhanced logging for DataStage input paths and OS command execution. …

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CVE-2026-16346 vulnerability details – vuln.today

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