CVE-2026-16856: IBM i is Affected By Multiple Vulnerabilities in Domain Name System

Published Aug 11, 2026
·
Updated

IBM i 7.6, and 7.5 could allow a local attacker to gain elevated privileges due to improper neutralization of special elements used in an OS command.

Other sources

IBM i could allow a local attacker to gain elevated privileges due to improper neutralization of special elements used in an OS command.

— IBM

Affected Software

5 affected components
IBM IBM i>=7.5<=7.6
IBM i<=7.6
IBM i<=7.5
IBM i=7.5
IBM i=7.6

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM i 7.6 to a version that resolves this vulnerability.

    Fixed in 7.6Patch SJ10931
  2. Upgrade

    Upgrade IBM i 7.5 to a version that resolves this vulnerability.

    Fixed in 7.5Patch SJ11010

Event History

Aug 11, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Aug 12, 2026
CVE Published
via MITRE·05:28 PM
Data Sourced
via MITRE·05:28 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·06:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-16856?

The severity of CVE-2026-16856 is high with a score of 8.8.

2

How do I fix CVE-2026-16856?

To mitigate CVE-2026-16856, apply the latest security updates provided by IBM for IBM i version 7.5 and 7.6.

3

What impact does CVE-2026-16856 have on IBM i systems?

CVE-2026-16856 can allow a local attacker to gain elevated privileges through OS command injection.

4

Which versions of IBM i are affected by CVE-2026-16856?

IBM i versions 7.5 and 7.6 are affected by CVE-2026-16856.

5

Can CVE-2026-16856 be exploited remotely?

CVE-2026-16856 cannot be exploited remotely as it requires local access to the affected IBM i systems.

Company

Resources

Contact

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