CVE-2026-17273
Received Received - Intake

Denial of Service in IBM i via NULL Pointer Dereference

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: IBM Corporation

Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to cause a denial of service due to a NULL pointer dereference.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-05
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-17273
EUVD
EUVD-2026-71477

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
ibm i 7.6
ibm i 7.5
ibm i 7.4
ibm i 7.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.

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Executive Summary

This vulnerability is a denial of service issue in IBM i versions 7.6, 7.5, 7.4, and 7.3. It occurs when a remote authenticated attacker exploits a NULL pointer dereference, which can crash the system or disrupt services.

Impact Analysis

If exploited, this vulnerability could cause system instability or unavailability, leading to service disruptions for users relying on IBM i systems. It requires an attacker to have valid authentication credentials.

Mitigation Strategies

Apply the latest IBM i PTF or update to a fixed release to address the NULL pointer dereference issue. Monitor IBM i security bulletins for patches and restrict remote authenticated access until patched.

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