CVE-2026-15562: Jboss-remoting: jboss-remoting: integer overflow in messagereader leads to pre-authentication denial of service

Severity: high (CVSS 7.5 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: 2026-08-11 · updated 2026-11-01
Weakness: CWE-190

Description

A flaw was found in EAP's jboss-remoting. A remote unauthenticated attacker who can reach :8080 (or :9990, or :4447) and complete an Upgrade: jboss-remoting handshake can cause OOM errors that degrade requests server-wide, leading to denial of service.

Affected products

Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7: all versions — fixed in 0:2.16.0-22.redhat_00057.1.el7eap
Red Hat JBoss Enterprise Application Platform 8.1.8.GA: all versions — fixed in 5.0.31.SP2-redhat-00001
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10: all versions — fixed in 0:2.40.0-8.redhat_00024.1.el10eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8: all versions — fixed in 0:2.40.0-8.redhat_00024.1.el8eap
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9: all versions — fixed in 0:2.40.0-8.redhat_00024.1.el9eap

How to fix

Upgrade to a fixed version: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.16.0-22.redhat_00057.1.el7eap; Red Hat JBoss Enterprise Application Platform 8.1.8.GA 5.0.31.SP2-redhat-00001; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 0:2.40.0-8.redhat_00024.1.el10eap; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:2.40.0-8.redhat_00024.1.el8eap; Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:2.40.0-8.redhat_00024.1.el9eap. Check the vendor advisory for mitigations.

References

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