CVE-2026-7771: IBM® Db2® is vulnerable to a trap when compiling specially crafted statements containing subqueries could lead to a denial of service

Published Jul 10, 2026
·
Updated

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a trap when compiling a specially crafted statements containing subqueries could lead to a denial of service.

Other sources

IBM Db2 is vulnerable to a trap when compiling a specially crafted statements containing subqueries could lead to a denial of service.

— IBM

Affected Software

6 affected components
IBM IBM® Db2®<=11.5.0 - 11.5.9
IBM IBM® Db2®<=12.1.0 - 12.1.4
IBM DB2>=11.5.0<=11.5.9
IBM DB2>=12.1.0<=12.1.4
IBM DB2>=11.5.0<=11.5.9
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.x to a version that resolves this vulnerability.

    Fixed in 11.5.9Patch TBD
  2. Upgrade

    Upgrade IBM Db2 V12.1.x to a version that resolves this vulnerability.

    Fixed in 12.1.4Patch TBD

Event History

Jul 10, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Jul 17, 2026
CVE Published
via MITRE·07:16 PM
Data Sourced
via MITRE·07:16 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·08:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-7771?

CVE-2026-7771 has a medium severity rating of 5.5.

2

How do I fix CVE-2026-7771?

To fix CVE-2026-7771, upgrade to the patched version of IBM Db2 that addresses this vulnerability.

3

What type of attack does CVE-2026-7771 involve?

CVE-2026-7771 involves a denial of service attack due to vulnerabilities in compiling specially crafted statements with subqueries.

4

Which versions of IBM Db2 are affected by CVE-2026-7771?

IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 are affected by CVE-2026-7771.

5

When was CVE-2026-7771 published?

CVE-2026-7771 was published on July 10, 2026.

Company

Resources

Contact

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