CVE-2025-27533: Apache ActiveMQ Memory Allocation Bug Could Lead to Denial of Service Vulnerability CVE-2025-27533: Apache ActiveMQ Memory Allocation Bug Could Lead to Denial of Service Do Son May 8, 2025 0 A vulnerability in Apache ActiveMQ's buffer handling can cause memory exhaustion, leading to denial of service. Patch now to version 6.1.6+ or 5.19.0+.