CVE-2026-18101: IBM i is Affected By Multiple Vulnerabilities in WebSphere Application Server Liberty

Published Aug 12, 2026
·
Updated

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to gain elevated privileges due to improper management of thread authority swaps.

Other sources

IBM i could allow a local attacker to gain elevated privileges due to improper management of thread authority swaps.

— IBM

Affected Software

8 affected components
IBM i<=7.6
IBM i<=7.5
IBM i<=7.4
IBM i<=7.3
IBM i=7.3
IBM i=7.4
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 SJ10874
  2. Upgrade

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

    Fixed in 7.5Patch SJ10875
  3. Upgrade

    Upgrade IBM i 7.4 to a version that resolves this vulnerability.

    Fixed in 7.4Patch SJ10876
  4. Upgrade

    Upgrade IBM i 7.3 to a version that resolves this vulnerability.

    Fixed in 7.3Patch SJ10877
  5. Compensating control

    If running unsupported versions of the affected products, upgrade to a supported and fixed version.

Event History

Aug 12, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Aug 13, 2026
CVE Published
via MITRE·08:42 PM
Data Sourced
via MITRE·08:42 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2026-18101?

CVE-2026-18101 has a high severity rating of 8.8.

2

How does CVE-2026-18101 impact IBM i systems?

CVE-2026-18101 can allow a local attacker to gain elevated privileges due to improper management of thread authority swaps.

3

Which versions of IBM i are affected by CVE-2026-18101?

CVE-2026-18101 affects IBM i versions 7.6, 7.5, 7.4, and 7.3.

4

What type of attack is associated with CVE-2026-18101?

CVE-2026-18101 is associated with a local attack that exploits improper thread authority management.

5

What should users do to mitigate CVE-2026-18101?

Users should apply patches or updates provided by IBM to mitigate the risks associated with CVE-2026-18101.

Company

Resources

Contact

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