CVE-2026-15564High· 7.4▾ TwilightWildfly's IIOP listener may permit deserialization of input streams before authentication is performed. An attacker who can gain access to the IIOP port may be able to construct and send malicious objects and achieve deserialization, if …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.7 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Wildfly's IIOP listener may permit deserialization of input streams before authentication is performed. An attacker who can gain access to the IIOP port may be able to construct and send malicious objects and achieve deserialization, if the target EJB allows untyped method parameters, and depending on the potential gadget chains available in the running classpath.
wildfly-ejb3 (all versions)wildfly-iiop-openjdkwildfly-ejb3 (all versions)wildfly-iiop-openjdk (all versions)Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Restrict network reachability to the IIOP listener (default TCP port 3528) so that only localhost or authorized management networks can access it.
firewall-cmd --permanent --remove-port=3528/tcp
firewall-cmd --reload
jboss-cli.sh --connect --command="/subsystem=iiop-openjdk:remove"
Caveats: Removing the IIOP subsystem will break remote EJB invocations or external services that rely on CORBA/IIOP protocols.
Warning: Applying firewall changes or removing server subsystems will disrupt active client connections and requires reloading the server configuration or restarting the JBoss EAP service to take full effect.
Connected by shared product, vendor, weakness, or advisory.
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