CVE-2026-15563 Red Hat CVE debrief

Who should care

Administrators and users of EAP, especially those using IIOP, should review and update IIOP configurations to prevent potential attacks. This includes reviewing compensating controls for exposed systems while remediation is scheduled and verified, and checking relevant monitoring, detection, and logs for exposed assets that need extra review. Additionally, tracking exceptions, retesting remediated assets, and closing the item only after evidence is documented is crucial.

Technical summary

The vulnerability exists in EAP's IIOP due to the listener's NameService accepting bind operations without authentication. This allows an attacker to hijack JNDI lookups and bind them to a malicious ORB, potentially leading to MITM or DoS attacks. The vulnerability can be exploited by an attacker to achieve MITM or DoS on further invocations. To mitigate this vulnerability, it is recommended to review and update IIOP configurations, apply patches or updates from the vendor, and monitor for suspicious activity.

Defensive priority

High-priority patching recommended due to potential for MITM or DoS attacks

Recommended defensive actions

• Apply patches or updates from the vendor
• Review and update IIOP configurations
• Monitor for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Evidence from Red Hat suggests a potential vulnerability in EAP's IIOP. Further analysis is required to determine affected scope and potential impact. The vulnerability exists in EAP's IIOP due to the listener's NameService accepting bind operations without authentication. This allows an attacker to hijack JNDI lookups and bind them to a malicious ORB, potentially leading to MITM or DoS attacks. Administrators and users of EAP, especially those using IIOP, should review and update IIOP configurations.

Official resources