Vulnerability · Published Aug 12, 2026 · Assigned by ibm

CVE-2026-13476IBM Informix Wire Listener Vulnerable to Unauthenticated Remote Code Execution

High 7.3

In plain English

A high-severity OS command injection in Informix Dynamic Server from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.4%top 63.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
IBM	Informix Dynamic Server	14.1015.012.10

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

https://www.ibm.com/support/pages/node/7282827 vendor-advisory, patch