CVE-2009-20004 gAlan <= 0.2.1 Buffer Overflow
A stack-based buffer overflow in gAlan allows arbitrary code execution when a user opens a malicious .galan file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2009-20004?
CVE-2009-20004 is a high-severity memory corruption vulnerability in gAlan, published on 21 Aug 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
gAlan 0.2.1, a modular audio processing environment for Windows, is vulnerable to a stack-based buffer overflow when parsing .galan files. The application fails to properly validate the length of input data, allowing a specially crafted file to overwrite the stack and execute arbitrary code. Exploitation requires local interaction, typically by convincing a user to open the malicious file.
Weakness: CWE-121
Which versions are affected by CVE-2009-20004?
How do I fix CVE-2009-20004?
No fix has been published for CVE-2009-20004 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-2009-20004 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-20004 exists.
Public exploit code: 1 Metasploit module.
Sources
Also known as GHSA-p67g-mw2c-3764.