High severity · published Aug 12, 2026
CVE-2026-13476
IBM Informix Wire Listener Vulnerable to Unauthenticated Remote Code Execution
7.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ID
Informix Dynamic Server · IBM
14.10; 15.0; 12.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-13476
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-13476
Vendor Advisory
https://www.ibm.com/support/pages/node/7282827
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