IBM Db2 11.5-12.1 DOS via SQL Resource Misalloc
CVE-2025-36122 Published on April 30, 2026
IBM® Db2® is vulnerable to a denial of service with a specially crafted query when stmtheap is set to automatic
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.3 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an authenticated user to cause a denial of service using a specially crafted SQL query due to improper allocation of system resources.
Vulnerability Analysis
CVE-2025-36122 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Allocation of Resources Without Limits or Throttling
The software 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.
Products Associated with CVE-2025-36122
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Affected Versions
IBM Db2:- Version 11.5.0, <= 11.5.9 is affected.
- Version 12.1.0, <= 12.1.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.