CVE-2023-27866: IBM Informix JDBC code execution

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-28 · updated 2026-06-17
Weakness: CWE-94

Description

IBM Informix JDBC Driver 4.10 and 4.50 is susceptible to remote code execution attack via JNDI injection when driver code or the application using the driver do not verify supplied LDAP URL in Connect String. IBM X-Force ID: 249511.

Affected products

IBM Informix Jdbc Driver: from 4.50.0 before 4.50.10; 4.10 — fixed in 4.50.10

How to fix

Upgrade to a fixed version: IBM Informix Jdbc Driver 4.50.10. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/249511
https://www.ibm.com/support/pages/node/7007615
https://exchange.xforce.ibmcloud.com/vulnerabilities/249511
https://www.ibm.com/support/pages/node/7007615

Get alerted when CVE-2023-27866 or the next vulnerability affects your stack