PT-2025-34101 · Undefined · Undefined

Published 2025-08-20 · Updated 2025-08-20 · CVE-2011-10020

NVD

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-10020

Affected Products

Undefined

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2011-10020 · Security Note
• https://vulncheck.com/advisories/kaillera-server-dos-via-malformed-udp-packet · Note
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/games/kaillera.rb · Note
• https://exploit-db.com/exploits/17460 · Note
• http://kaillera.com · Note