CVE-2026-6053

Service interruption via unbounded query resource allocation

Published May 27, 2026 · Updated May 27, 2026

Resource allocation without limits in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 allows local users to interrupt service. A crafted query involving range-partitioned tables consumes application-heap resources without effective limits; IBM withholds the responsible functionality and replication details. A low-privilege authenticated user must be able to execute the query; the resulting memory-allocation failure affects availability without reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource allocation without limits in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 allows local users to interrupt service. A crafted query involving range-partitioned tables consumes application-heap resources without effective limits; IBM withholds the responsible functionality and replication details. A low-privilege authenticated user must be able to execute the query; the resulting memory-allocation failure affects availability without reported data disclosure or modification.

The record

CVE
CVE-2026-6053
Published
May 27, 2026
Updated
May 27, 2026
Vendor
OpenBMC Project
Product
Db2
Classifications
CWE-770, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.5.0 <=11.5.9
  2. Affected versionversion=12.1.0 <=12.1.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenBMC Project · Db2version=11.5.0 <=11.5.9; version=12.1.0 <=12.1.4

Published CVSS scores

5.5IBMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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