CVE-2026-18341
Received Received - Intake

Integer Underflow in IBM i Leading to Memory Corruption

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 corrupt memory due to an integer underflow.

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-18341
EUVD
EUVD-2026-71606

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
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

IBM i 7.6, 7.5, 7.4, and 7.3 are vulnerable to memory corruption due to an integer underflow issue. This flaw can be exploited by a remote authenticated attacker to corrupt memory.

Impact Analysis

A remote attacker could exploit this to cause memory corruption, potentially leading to denial of service, unauthorized access, or execution of arbitrary code on the affected system.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations due to potential exposure of sensitive data.

Mitigation Strategies

Apply IBM i PTFs or updates as soon as they become available to address the integer underflow issue. Monitor IBM's security advisories for patches and test them in a non-production environment before deployment.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-18341. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart