Denial of Service in IBM i via Out-of-Bounds Write

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 an out-of-bounds write.

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-2026-17502

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	i	7.6
ibm	i	7.5
ibm	i	7.4
ibm	i	7.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a denial of service issue in IBM i versions 7.6, 7.5, 7.4, and 7.3. It allows a remote attacker to cause a system crash or instability by exploiting an out-of-bounds write vulnerability.

Impact Analysis

The vulnerability could lead to system downtime, disrupting operations. It may also allow attackers to execute arbitrary code or gain unauthorized access, depending on the system configuration.

Mitigation Strategies

Apply the latest IBM i PTFs or updates provided by IBM to address the out-of-bounds write issue. Monitor IBM security advisories for patches and test updates in a non-production environment before deployment.

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