CVE-2025-36123

Service interruption via unbounded XML-table copying

Published Jan 30, 2026 · Updated Jan 30, 2026

Resource exhaustion in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.3 allows local users to interrupt database service. When a large table containing XML data is copied, Db2 allocates system resources without an enforced limit or throttling and exhausts capacity. Local access is required; IBM has not disclosed the specific copying path, resource type, or whether the interruption is a hang or crash.

CVSS severity6.2
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in IBM Db2 11.5.0 through 11.5.9 and 12.1.0 through 12.1.3 allows local users to interrupt database service. When a large table containing XML data is copied, Db2 allocates system resources without an enforced limit or throttling and exhausts capacity. Local access is required; IBM has not disclosed the specific copying path, resource type, or whether the interruption is a hang or crash.

The record

CVE
CVE-2025-36123
Published
Jan 30, 2026
Updated
Jan 30, 2026
Vendor
IBM
Product
IBM Db2 for Linux, UNIX, and Windows
Classifications
CWE-770, T1499.003
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 30, 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 <=12.1.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM Db2 for Linux, UNIX, and Windowsversion=11.5.0 <=11.5.9; version=12.1.0 <=12.1.3

Published CVSS scores

6.2IBMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

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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