IBM Db2 DoS via ALTER TABLE Injection in Query
CVE-2025-36407 Published on January 30, 2026
IBM Db2 Denial of Service
IBM® Db2® is vulnerable to a denial of service with a specially crafted query that uses ALTER TABLE operations.
Vulnerability Analysis
CVE-2025-36407 can be exploited 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
Improper Validation of Specified Quantity in Input
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
Products Associated with CVE-2025-36407
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Affected Versions
IBM Db2 for Linux, UNIX and Windows:- 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.