CVE-2026-18680: IBM i vulnerability

Q: What is the severity of CVE-2026-18680?

CVE-2026-18680 has been assigned a risk level of 40, indicating a significant security concern.

Q: How do I fix CVE-2026-18680?

To mitigate CVE-2026-18680, ensure that you apply the latest security patches provided by IBM for the IBM i system.

Q: Who is affected by CVE-2026-18680?

CVE-2026-18680 affects users of IBM i systems utilizing the NetServer server job.

Q: What type of vulnerability is CVE-2026-18680?

CVE-2026-18680 is a stack corruption vulnerability resulting from incomplete bounds checking.

Q: What could an attacker achieve by exploiting CVE-2026-18680?

An authenticated attacker could exploit CVE-2026-18680 to cause a system level denial of service.

Published Aug 12, 2026

Updated

IBM i could allow an authenticated attacker to trigger stack corruption within the NetServer server job, caused by incomplete bounds checking. The attacker could exploit this vulnerability to cause a system level denial of service.

Affected Software

4 affected components

IBM i<=7.6

IBM i<=7.5

IBM i<=7.4

IBM i<=7.3

Event History

Aug 12, 2026

CVE Published

via IBM·12:00 AM

Data Sourced

via IBM·12:00 AM

DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

IBM-7283573

Frequently Asked Questions

What is the severity of CVE-2026-18680?

CVE-2026-18680 has been assigned a risk level of 40, indicating a significant security concern.

How do I fix CVE-2026-18680?

To mitigate CVE-2026-18680, ensure that you apply the latest security patches provided by IBM for the IBM i system.

Who is affected by CVE-2026-18680?

CVE-2026-18680 affects users of IBM i systems utilizing the NetServer server job.

What type of vulnerability is CVE-2026-18680?

CVE-2026-18680 is a stack corruption vulnerability resulting from incomplete bounds checking.

What could an attacker achieve by exploiting CVE-2026-18680?

An authenticated attacker could exploit CVE-2026-18680 to cause a system level denial of service.

CVE-2026-18680: IBM i vulnerability

Affected Software

Event History

Parent advisories

Don't miss critical vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2026-18680?

How do I fix CVE-2026-18680?

Who is affected by CVE-2026-18680?

What type of vulnerability is CVE-2026-18680?

What could an attacker achieve by exploiting CVE-2026-18680?

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Frequently Asked Questions

What is the severity of CVE-2026-18680?

How do I fix CVE-2026-18680?

Who is affected by CVE-2026-18680?

What type of vulnerability is CVE-2026-18680?

What could an attacker achieve by exploiting CVE-2026-18680?