CVE-2026-10109 IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling
Remote attackers can execute arbitrary code on IBM Db2 servers by exploiting improper handling of pre-authentication DRDA handshakes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-10109?
CVE-2026-10109 is a critical code injection vulnerability in Ibm Db2, published on 30 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling.
Weakness: CWE-94
Which versions are affected by CVE-2026-10109?
It affects 1 product.
Products include Ibm Db2.
How do I fix CVE-2026-10109?
No fix has been published for CVE-2026-10109 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-10109 being exploited?
There is no known exploitation of CVE-2026-10109 in the wild and no public exploit code.
Other vulnerabilities in Ibm Db2
Sources
Also known as GHSA-fq2g-wj3x-6hc2.