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Db2 CVE-2025-1000

MEDIUM
Allocation of Resources Without Limits or Throttling (CWE-770)
2025-05-05 psirt@us.ibm.com
Microsoft IBM Denial Of Service Db2 Windows
5.3
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 28, 2026 - 18:40 vuln.today
CVE Published
May 05, 2025 - 21:15 nvd
MEDIUM 5.3

DescriptionNVD

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1

could allow an authenticated user to cause a denial of service when connecting to a z/OS database due to improper handling of automatic client rerouting.

AnalysisAI

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service when connecting to a. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service when connecting to a z/OS database due to improper handling of automatic client rerouting. Affected products include: Ibm Db2. Version information: through 11.5.9.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set resource limits, implement rate limiting, validate input sizes.

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CVE-2025-1000 vulnerability details – vuln.today
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