CVE-2025-36136 IBM denial of service
A local user can cause a denial of service in IBM Db2 due to incorrect instance startup detection in the database monitor script.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-36136?
CVE-2025-36136 is a medium-severity denial of service vulnerability in Ibm Db2, published on 7 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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 a local user to cause a denial of service due to the database monitor script incorrectly detecting that the instance is still starting under specific conditions.
Weakness: CWE-770
Which versions are affected by CVE-2025-36136?
It affects 1 product.
Products include Ibm Db2.
How do I fix CVE-2025-36136?
No fix has been published for CVE-2025-36136 yet. Limit exposure of the affected software until one is available.
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-2025-36136 being exploited?
There is no known exploitation of CVE-2025-36136 in the wild and no public exploit code.
Other vulnerabilities in Ibm Db2
Sources
Also known as GHSA-f857-pgq5-x3mc.