TI-2026-71251 Aliases CVE-2026-104332 GHSA-472v-43c8-h6m2

IBM Db2 Denial of Service

LOW 24CWE-121Published 2026-10-12 · Updated 2026-10-12

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 is affected by a denial of service when a specially crafted query involving a Materialized Query Table is executed. The weakness is a stack-based buffer overflow (CWE-121). The CVSS 3.1 base score is 5.5 (MEDIUM), with a local attack vector, low privileges required, and high availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to a denial of service when executing a specially crafted query with a Materialized Query Table

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00098 0th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
IBM	Db2	11.5.0 – 11.5.9; 12.1.0 – 12.1.5	—	No fix listed	CNA

Db2 VendorIBM Affected 11.5.0 – 11.5.9; 12.1.0 – 12.1.5 Fixed in — No fix listed CNA

CPE names CNA · 8

CPE	Versions	Role	Vendor
cpe:2.3:a:ibm:db2:11.5.0:::::aix::	11.5.0	—	IBM
cpe:2.3:a:ibm:db2:11.5.9:::::aix::	11.5.9	—	IBM
cpe:2.3:a:ibm:db2:12.1.0:::::aix::	12.1.0	—	IBM
cpe:2.3:a:ibm:db2:12.1.5:::::aix::	12.1.5	—	IBM
cpe:2.3:a:ibm:db2:11.5.0:::::linux::	11.5.0	—	IBM
cpe:2.3:a:ibm:db2:11.5.9:::::linux::	11.5.9	—	IBM
cpe:2.3:a:ibm:db2:12.1.0:::::linux::	12.1.0	—	IBM
cpe:2.3:a:ibm:db2:12.1.5:::::linux::	12.1.5	—	IBM

cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:aix:*:* Versions 11.5.0 — ·IBM
cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:aix:*:* Versions 11.5.9 — ·IBM
cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:aix:*:* Versions 12.1.0 — ·IBM
cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:aix:*:* Versions 12.1.5 — ·IBM
cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:linux:*:* Versions 11.5.0 — ·IBM
cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:linux:*:* Versions 11.5.9 — ·IBM
cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:linux:*:* Versions 12.1.0 — ·IBM
cpe:2.3:a:ibm:db2:12.1.5:*:*:*:*:linux:*:* Versions 12.1.5 — ·IBM

Remediation

The sources list no fixed version for the affected ranges, which have status no_fix_listed. Restrict local user access to systems running the affected Db2 versions until IBM publishes a fix.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-12 Threatist record created from CVE-2026-104332
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: MEDIUM → LOW
2026-10-13 Alias added: GHSA-472v-43c8-h6m2

References

Patch 1

https://www.ibm.com/support/pages/node/7291614

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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences