CVE-2009-10006 UFO: Alien Invasion <= 2.2.1 IRC Client Buffer Overflow
A stack-based buffer overflow in the game's IRC client allows arbitrary code execution when connecting to a malicious server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-10006?
CVE-2009-10006 is a critical memory corruption vulnerability in UFO: Alien Invasion, published on 22 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2009-10006?
How do I fix CVE-2009-10006?
No fix has been published for CVE-2009-10006 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2009-10006 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-10006 exists.
Public exploit code: 2 Metasploit modules.
Sources
Also known as GHSA-mj5x-v9m2-c9jh.