CVE-2026-18086: IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension

Published Aug 12, 2026
·
Updated

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to execute arbitrary code or cause a denial of service due to improper bounds checking.

Other sources

IBM i could allow a local attacker to execute arbitrary code or cause a denial of service due to improper bounds checking.

— 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 Release5770-JV1 to a version that resolves this vulnerability.

    Fixed in 7.6Patch SJ11036
  2. Upgrade

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

    Fixed in 7.6Patch SJ11069
  3. Upgrade

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

    Fixed in 7.6Patch SJ11070
  4. Upgrade

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

    Fixed in 7.6Patch SJ11072
  5. Upgrade

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

    Fixed in 7.6Patch SJ11073
  6. Upgrade

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

    Fixed in 7.6Patch SJ11075
  7. Upgrade

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

    Fixed in 7.6Patch SJ11076
  8. Upgrade

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

    Fixed in 7.6Patch SJ11077
  9. Upgrade

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

    Fixed in 7.6Patch SJ11082
  10. Upgrade

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

    Fixed in 7.6Patch SJ11085
  11. Upgrade

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

    Fixed in 7.6Patch SJ11086
  12. Upgrade

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

    Fixed in 7.6Patch SJ11087
  13. Upgrade

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

    Fixed in 7.6Patch SJ11088
  14. Upgrade

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

    Fixed in 7.3Patch SJ11067
  15. Upgrade

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

    Fixed in 7.4Patch SJ11071
  16. Upgrade

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

    Fixed in 7.5Patch SJ11068

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-2026-18086?

CVE-2026-18086 has a medium severity rating of 4.5.

2

How do I fix CVE-2026-18086?

To address CVE-2026-18086, ensure that your IBM i systems are updated to the latest patches provided by IBM.

3

What systems are affected by CVE-2026-18086?

CVE-2026-18086 affects IBM i versions 7.3, 7.4, 7.5, and 7.6.

4

What impacts can CVE-2026-18086 have on my system?

CVE-2026-18086 could allow a local attacker to execute arbitrary code or cause a denial of service.

5

How does CVE-2026-18086 exploit improper bounds checking?

CVE-2026-18086 exploits improper bounds checking in the Java Secure Sockets Extension on IBM i systems.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203