CVE-2026-17470
Analyzed Analyzed - Analysis Complete

Buffer Overflow in IBM i

Vulnerability report for CVE-2026-17470, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-04

Last updated on: 2026-09-09

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 a buffer overflow.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-09-04
Last Modified
2026-09-09
Generated
2026-09-25
AI Q&A
2026-09-04
EPSS Evaluated
2026-09-23
NVD
EUVD

Affected Vendors & Products

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

Helpful Resources

Exploitability

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

Attack-Flow Graph

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Executive Summary

This vulnerability is a buffer overflow issue in IBM i operating systems versions 7.6, 7.5, 7.4, and 7.3. A remote attacker could exploit this to cause a denial of service by sending specially crafted input that exceeds buffer limits.

Detection Guidance

Detection of this vulnerability requires checking for the presence of IBM i systems running affected versions (7.3, 7.4, 7.5, 7.6) and verifying if the recommended PTFs have been applied. Use IBM i commands like DSPPTF to list installed PTFs and compare them against the required fixes (SJ11303 for 7.3, SJ11302 for 7.4, SJ11301 for 7.5, SJ11300 for 7.6).

Impact Analysis

The impact includes system instability or unavailability due to the denial of service. It does not allow data theft or code execution but may disrupt services relying on the affected IBM i systems.

Compliance Impact

This vulnerability could lead to a denial of service, which may impact availability of systems. Compliance with standards like GDPR or HIPAA often requires maintaining system availability and protecting against disruptions. However, the provided CVE data does not specify direct impacts on compliance.

Mitigation Strategies

Apply IBM i PTFs or updates as soon as they become available to address the buffer overflow issue. Monitor IBM's security advisories for patches and follow their recommended mitigation steps.

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