IBM DB2/DB2 Connect Server up to 11.5.9/12.1.3 XML Data allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in IBM DB2 and DB2 Connect Server up to 11.5.9/12.1.3 and classified as problematic. Impacted is an unknown function of the component XML Data Handler. The manipulation leads to allocation of resources. This vulnerability is referenced as CVE-2025-36123. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in IBM DB2 and DB2 Connect Server up to 11.5.9/12.1.3 and classified as problematic. This issue affects an unknown part of the component XML Data Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 - 11.5.9 and 12.1.0 - 12.1.3 could allow a local user to cause a denial of service when copying large table containing XML data due to improper allocation of system resources.

It is possible to read the advisory at ibm.com. The identification of this vulnerability is CVE-2025-36123 since 04/15/2025. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-206555). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 6.2
CNA Vector (ibm): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/15/2025 CVE reserved
01/31/2026 +291 days Advisory disclosed
01/31/2026 +0 days VulDB entry created
02/06/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: ibm.com

Advisory: ibm.com
Status: Confirmed

CVE: CVE-2025-36123 (🔒)
GCVE (CVE): GCVE-0-2025-36123
GCVE (VulDB): GCVE-100-343535
EUVD: 🔒

Entryinfo

Created: 01/31/2026 03:11
Updated: 02/06/2026 03:01
Changes: 01/31/2026 03:11 (63), 01/31/2026 15:37 (1), 02/06/2026 03:01 (11)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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