CVE-2026-6053

IBM® Db2® is vulnerable to a denial of service when a specially crafted query is run with range partitioned tables

MEDIUM
5.5
CVSS Score
Published: May 27, 2026 at 01:10 PM UTC
Updated: October 14, 2026 at 08:10 PM UTC
1 product affected across 1 vendorDB2· also runs on 4 platforms

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when a specially crafted query is run with range partitioned tables.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

11.5.0 ≤ v ≤ 11.5.912.1.0 ≤ v ≤ 12.1.411.5.011.5.912.1.012.1.4
ibm-aix (environment) · ibm-linux-on-ibm-z (environment) · linux-linux-kernel (environment) · microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://www.ibm.com/support/pages/node/7273556

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMibm
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-770

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