CVE-2026-16871

Undergoing Analysis Undergoing Analysis - In Progress

Heap Buffer Overflow in IBM i

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 authenticated attacker to obtain sensitive information due to a heap buffer overflow.

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-2026-16871

EUVD

EUVD-2026-58375

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 is a heap buffer overflow vulnerability in IBM i versions 7.6, 7.5, 7.4, and 7.3. It allows a remote authenticated attacker to access sensitive information due to improper memory handling.

Impact Analysis

A remote attacker could exploit this to read sensitive data from the system, potentially leading to unauthorized access or data leaks. The impact is limited as it requires authentication and does not allow code execution.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, which may violate GDPR or HIPAA requirements for protecting sensitive information. Organizations must address it to maintain compliance.

Mitigation Strategies

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

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