CVE-2026-13476 IBM Informix Wire Listener Vulnerable to Unauthenticated Remote Code Execution
Unauthenticated attackers can execute arbitrary commands with service account privileges on IBM Informix Dynamic Server due to improper input validation.
- 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-2026-13476?
CVE-2026-13476 is a high-severity command injection vulnerability in Ibm Informix Dynamic Server, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary commands with service account privileges on the system due to improper validation of user supplied input.
Weakness: CWE-78
Which versions are affected by CVE-2026-13476?
It affects 1 product.
Products include Ibm Informix Dynamic Server.
How do I fix CVE-2026-13476?
No fix has been published for CVE-2026-13476 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-13476 being exploited?
There is no known exploitation of CVE-2026-13476 in the wild and no public exploit code.
Other vulnerabilities in Ibm Informix Dynamic Server
Sources
Also known as GHSA-2g57-mxfj-4j65.