CVE-2011-10020 - CVE House
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Status published High CVE-2011-10020

Kaillera 0.86 Server DoS via Malformed UDP Packet

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Sil3nt_Dre4m

Affected Vendor

Kaillera Project

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Affected Software

Server
Vulnerable Versions:
0

Timeline

Official Publish: August 20th, 2025
Last Modified: May 15th, 2026
Added to House: July 19th, 2026

CVSS Vectors

Weaknesses (CWE)