CVE-2025-36001 IBM Db2 Denial of Service
An authenticated user can cause a denial of service in IBM Db2 by submitting a specially crafted SQL statement with XML that triggers uncontrolled recursion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-36001?
CVE-2025-36001 is a medium-severity denial of service vulnerability in Ibm Db2, published on 30 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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 an authenticated user to cause a denial of service using a specially crafted SQL statement including XML that performs uncontrolled recursion.
Weakness: CWE-674
Which versions are affected by CVE-2025-36001?
It affects 1 product.
Products include Ibm Db2.
How do I fix CVE-2025-36001?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-36001 being exploited?
There is no known exploitation of CVE-2025-36001 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Ibm Db2
Sources
Also known as GHSA-hv8p-7qgv-7r4p, ROOT-OS-UBUNTU-2204-CVE-2025-36001.