CVE-2026-10543: IBM® Db2® is vulnerable to privilege escalation with a specially crafted query

Published Aug 7, 2026
·
Updated

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to privilege escalation with a specially crafted query.

Other sources

IBM Db2 is vulnerable to privilege escalation with a specially crafted query.

— IBM

Affected Software

3 affected components
IBM DB2>=11.5.0<=11.5.9, >=12.1.0<=12.1.5
IBM IBM® Db2®<=11.5.0 - 11.5.9
IBM IBM® Db2®<=12.1.0 - 12.1.5

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM Db2 V11.5 (impacted releases 11.5.0 through 11.5.9) to a version that resolves this vulnerability.

    Fixed in V11.5.9
  2. Upgrade

    Upgrade IBM Db2 V12.1 (impacted releases 12.1.0 through 12.1.5) to a version that resolves this vulnerability.

    Fixed in V12.1.4
  3. Upgrade

    Upgrade IBM Db2 V12.1.5 to a version that resolves this vulnerability.

    Fixed in V12.1.5Patch Security Update #88454
  4. Compensating control

    For the interim remediation, use the security update containing the interim fix for the issue from Fix Central, as referenced in the provided IBM statement (Security Update #88454 or later for V12.1.5).

  5. Operational

    After applying the security update, verify the Db2 environment is on the latest levels specified by IBM for remediation (V11.5.9, V12.1.4, or V12.1.5) for the impacted release you run.

Event History

Aug 7, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Aug 12, 2026
CVE Published
via MITRE·08:50 PM
Data Sourced
via MITRE·08:50 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

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