CVE-2026-17271: IBM i is Affected By Multiple Vulnerabilities in the Debug Server

Published Aug 11, 2026
·
Updated

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper validation of input size.

Other sources

IBM i could allow a remote attacker to cause a denial of service due to improper validation of input size.

— IBM

Affected Software

5 affected components
IBM IBM i>=7.3<=7.6
IBM i<=7.6
IBM i<=7.5
IBM i<=7.4
IBM i<=7.3

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 SJ10899
  2. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.5Patch SJ10903
  3. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.4Patch SJ10915
  4. Upgrade

    Upgrade IBM i to a version that resolves this vulnerability.

    Fixed in 7.3Patch SJ10916

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·05:35 PM
Data Sourced
via MITRE·05:35 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·06:17 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-17271?

The severity of CVE-2026-17271 is high, with a score of 7.5.

2

How does CVE-2026-17271 affect IBM i users?

CVE-2026-17271 could allow a remote attacker to cause a denial of service on IBM i systems.

3

What versions of IBM i are impacted by CVE-2026-17271?

IBM i versions 7.6, 7.5, 7.4, and 7.3 are affected by CVE-2026-17271.

4

What should I do to mitigate CVE-2026-17271?

To mitigate CVE-2026-17271, ensure that your IBM i system is updated to the latest security patches.

5

Is CVE-2026-17271 an input validation vulnerability?

Yes, CVE-2026-17271 is an input validation vulnerability that can lead to denial of service.

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
CVE-2026-17271 - IBM i is Affected By Multiple Vulnerabilities in the Debug Server - SecAlerts