CVE-2020-35510: Red Hat JBoss-Remoting

Medium severity, CVSS 5.9. EPSS: 1.1% chance of exploitation in the next 30 days.

A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Affected products

• Red Hat JBoss-Remoting: before 5.0.20 (fixed in 5.0.20); version 5.0.20 only

Published 2021-06-02. Last modified 2026-06-17.