CVE-2026-16896: IBM i is Affected By Multiple Vulnerabilities in Network Authentication Service

Published Aug 12, 2026
·
Updated

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to obtain unauthorized access to files due to a time-of-check time-of-use (TOCTOU) race condition.

Other sources

IBM i could allow a local authenticated attacker to obtain unauthorized access to files due to a time-of-check time-of-use (TOCTOU) race condition.

— 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 7.6 to a version that resolves this vulnerability.

    Fixed in 7.6Patch SJ11094
  2. Upgrade

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

    Fixed in 7.5Patch SJ11093
  3. Upgrade

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

    Fixed in 7.4Patch SJ11095
  4. Upgrade

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

    Fixed in 7.3Patch SJ11096

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·07:51 PM
Data Sourced
via MITRE·07:51 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·08:17 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

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