IBM DB2/DB2 Connect Server up to 11.5.9/12.1.3 Global Variable excessive reliance on global variables

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in IBM DB2 and DB2 Connect Server up to 11.5.9/12.1.3. This vulnerability affects unknown code of the component Global Variable Handler. Performing a manipulation results in excessive reliance on global variables. This vulnerability was named CVE-2025-36009. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in IBM DB2 and DB2 Connect Server up to 11.5.9/12.1.3. This affects an unknown functionality of the component Global Variable Handler. The manipulation with an unknown input leads to a excessive reliance on global variables vulnerability. CWE is classifying the issue as CWE-1108. The code is structured in a way that relies too much on using or setting global variables throughout various points in the code, instead of preserving the associated information in a narrower, more local context. This is going to have an impact on availability. The summary by CVE is:

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an authenticated user to cause a denial of service due to excessive use of a global variable.

The advisory is shared at ibm.com. This vulnerability is uniquely identified as CVE-2025-36009 since 04/15/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 297627 (Linux Distros Unpatched Vulnerability : CVE-2025-36009), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (297627) and EUVD (EUVD-2025-206552). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (ibm): 🔒

CVSSv2info

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

Exploitinginfo

Class: Excessive reliance on global variables
CWE: CWE-1108
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297627
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-36009

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
02/05/2026 +5 days VulDB entry last update

Sourcesinfo

Vendor: ibm.com

Advisory: ibm.com
Status: Confirmed

CVE: CVE-2025-36009 (🔒)
GCVE (CVE): GCVE-0-2025-36009
GCVE (VulDB): GCVE-100-343533
EUVD: 🔒

Entryinfo

Created: 01/31/2026 03:10
Updated: 02/05/2026 06:07
Changes: 01/31/2026 03:10 (63), 01/31/2026 15:37 (1), 02/04/2026 08:54 (2), 02/05/2026 06:07 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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