CVE-2026-104364 IBM® Db2® Denial of Service
A local attacker can cause a denial of service in IBM Db2 due to improper input validation, requiring a patch to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104364?
CVE-2026-104364 is a low-severity denial of service vulnerability in IBM Db2, published on 12 Oct 2026. 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 12.1.5 could allow a local attacker to cause a denial of service due to improper input validation.
Weakness: CWE-20
Which versions are affected by CVE-2026-104364?
How do I fix CVE-2026-104364?
No fix has been published for CVE-2026-104364 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-2026-104364 being exploited?
There is no known exploitation of CVE-2026-104364 in the wild and no public exploit code.
Sources
Also known as GHSA-mc63-mc2v-x24w.