CVE-2026-17463 Denial of service in Db2
Remote authenticated attackers can cause a denial of service in IBM Db2 through uncontrolled resource consumption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17463?
CVE-2026-17463 is a medium-severity denial of service vulnerability in IBM Db2, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a remote authenticated attacker to cause a denial of service due to uncontrolled resource consumption.
Weakness: CWE-400
Which versions are affected by CVE-2026-17463?
How do I fix CVE-2026-17463?
No fix has been published for CVE-2026-17463 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-2026-17463 being exploited?
There is no known exploitation of CVE-2026-17463 in the wild and no public exploit code.
Sources
Also known as GHSA-g9xv-h3jc-5g3h.