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CVE-2009-20004

36
FAUCET Score

CVE-2009-20004 describes a stack-based buffer overflow vulnerability in gAlan 0.2.1, a modular audio processing environment for Windows. This flaw allows an attacker to execute arbitrary code by crafting a malicious .galan file that, when opened by a user, overwrites the application's stack due to improper input length validation. The vulnerability has a high CVSS score of 8.4, indicating a significant risk, as it can lead to complete compromise of the affected system, though it requires user interaction (UI:A) and local access (AV:L). While not actively exploited in the wild (KEV: No), a Metasploit module exists for this vulnerability, demonstrating its exploitability. Despite the availability of exploit code, there is no evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
GAlanGAlan
>= 0, <= 0.2.1CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 4.0

8.4HIGH

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
27.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: gAlan 0.2.1 Buffer Overflow · Dec 7, 2009
This CVE's current EPSS score of 0.0034 is in the 25th percentile among its peer group of 11,616 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

raw.githubusercontent.com / rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/galan_fileformat_bof.rb
web.archive.org / web/20101210055252/http://galan.sourceforge.net
exploit-db.com / exploits/10339
exploit-db.com / exploits/10345
exploit-db.com / exploits/16664
fortiguard.com / encyclopedia/ips/18034/galan-galan-file-stack-overflow
vulncheck.com / advisories/galan-buffer-overflow