CVE-2011-10020: Kaillera Project Server

High severity, CVSS 8.7. EPSS: 1.3% chance of exploitation in the next 30 days.

Kaillera Server version 0.86 is vulnerable to a denial-of-service condition triggered by sending a malformed UDP packet after the initial handshake. Once a client sends a valid HELLO0.83 packet and receives a response, any subsequent malformed packet causes the server to crash and become unresponsive. This flaw stems from improper input validation in the server’s UDP packet handler, allowing unauthenticated remote attackers to disrupt service availability.

Affected products

• Kaillera Project Server: up to and including 0.86

Published 2025-08-20. Last modified 2026-06-16.