
CVE-2023-46604: Apache ActiveMQ RCE via OpenWire, CVSS 10.0
CVE-2023-46604 is a CVSS 10.0 deserialization / remote class loading vulnerability in Apache ActiveMQ's OpenWire protocol. An unauthenticated attacker sends a specially crafted ClassInfo message to port 61616, causing the broker to load and execute a Java class from an attacker-controlled HTTP server. Active exploitation by HelloKitty ransomware and Kinsing cryptominer began within days of the advisory. Affects ActiveMQ versions up to 5.15.16, 5.16.7, 5.17.6, and 5.18.3.
