CVE-2009-20004
CVE-2009-20004 is a high-severity vulnerability with a CVSS 4.0 base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-121.
Key facts
- Severity: High (CVSS 4.0 base score 8.4)
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2009-5124
- Weakness: CWE-121
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2009-20004?
- 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.
- How severe is CVE-2009-20004?
- CVE-2009-20004 has a CVSS 4.0 base score of 8.4, rated high severity.
- Is CVE-2009-20004 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2009-20004?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2009-20004 have an EU (EUVD) identifier?
- Yes. CVE-2009-20004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2009-5124.
- When was CVE-2009-20004 published?
- CVE-2009-20004 was published on 2025-08-21 and last updated on 2026-06-16.
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/galan_fileformat_bof.rb
- https://web.archive.org/web/20101210055252/http://galan.sourceforge.net/
- https://www.exploit-db.com/exploits/10339
- https://www.exploit-db.com/exploits/10345
- https://www.exploit-db.com/exploits/16664
- https://www.fortiguard.com/encyclopedia/ips/18034/galan-galan-file-stack-overflow
- https://www.vulncheck.com/advisories/galan-buffer-overflow
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