CVE-2026-17077

Received Received - Intake

Denial of Service in IBM i Due to Uninitialized Variable

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: IBM Corporation

Description

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to the use of an uninitialized variable.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-13

Last Modified

2026-08-13

Generated

2026-08-14

AI Q&A

2026-08-14

EPSS Evaluated

N/A

NVD

CVE-2026-17077

EUVD

EUVD-2026-58395

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	ibm_i	From 7.6 (inc)
ibm	ibm_i	From 7.5 (inc)
ibm	ibm_i	From 7.4 (inc)
ibm	ibm_i	From 7.3 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-457	The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

Attack-Flow Graph

Executive Summary

IBM i versions 7.6, 7.5, 7.4, and 7.3 contain a vulnerability where a remote attacker could cause a denial of service by exploiting an uninitialized variable. This flaw may lead to system instability or unresponsiveness.

Impact Analysis

This vulnerability could allow attackers to disrupt services by triggering a denial of service, potentially causing system crashes or slowdowns. It may affect availability but does not directly expose data or enable unauthorized access.

Mitigation Strategies

Apply the latest IBM i PTFs or updates provided by IBM to address the uninitialized variable issue. Monitor IBM's security bulletins for patches and test them in a non-production environment before deployment.

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