CVE-2026-6936: IBM i is Affected by a Denial of Service Vulnerability []

Published May 13, 2026
·
Updated

IBM i 7.6, 7.5, 7.4, and 7.3 s vulnerable to a denial-of-service attack due to uncontrolled recursion in the Integrated Language Environment (ILE) compiler. An authenticated attacker could exploit this vulnerability by compiling specially crafted source code containing a specific combination of statements.

Other sources

IBM i is vulnerable to a denial-of-service attack due to uncontrolled recursion in the Integrated Language Environment (ILE) compiler. An authenticated attacker could exploit this vulnerability by compiling specially crafted source code containing a specific combination of statements.

— IBM

Affected Software

6 affected components
IBM i<=7.6
IBM i<=7.5
IBM i<=7.4
IBM i<=7.3
All of the following
IBM i>=7.3<=7.6
IBM i

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.6Patch MJ09365
  2. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.5Patch MJ09335
  3. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.4Patch MJ09334
  4. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.3Patch MJ09332

Event History

May 13, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
May 27, 2026
CVE Published
via MITRE·01:10 PM
Data Sourced
via MITRE·01:10 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·02:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2026-6936?

CVE-2026-6936 has a medium severity score of 6.5.

2

What systems are affected by CVE-2026-6936?

CVE-2026-6936 affects IBM i versions 7.3, 7.4, 7.5, and 7.6.

3

How do I fix CVE-2026-6936?

To fix CVE-2026-6936, apply the relevant PTF updates for your IBM i version.

4

What type of vulnerability is CVE-2026-6936?

CVE-2026-6936 is a denial-of-service vulnerability due to uncontrolled recursion in the ILE compiler.

5

Can an unauthenticated user exploit CVE-2026-6936?

No, an authenticated attacker is required to exploit CVE-2026-6936.

Company

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