CVE-2009-10006

Critical

Description

UFO: Alien Invasion versions up to and including 2.2.1 contain a buffer overflow vulnerability in its built-in IRC client component. When the client connects to an IRC server and receives a crafted numeric reply (specifically a 001 message), the application fails to properly validate the length of the response string. This results in a stack-based buffer overflow, which may corrupt control flow structures and allow arbitrary code execution. The vulnerability is triggered during automatic IRC connection handling and does not require user interaction beyond launching the game.

SeverityCritical
CVSS9.3
Exploit probability—
ProductUFO: Alien Invasion
PublishedAug 22, 2025
First seenAug 22, 2025
Weakness typeCWE-121CWE-121

How to fix

Affected products

ProductAffected versionsFixed in
UFO: Alien Invasion Project UFO: Alien Invasionv ≤ 2.2.1—

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