CVE-2010-20109
CVE-2010-20109 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-22.
Key facts
- Severity: High (CVSS 4.0 base score 8.7)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2010-5318
- Weakness: CWE-22
- Published:
- Last modified:
Description
Barracuda products, confirmed in Spam & Virus Firewall, SSL VPN, and Web Application Firewall versions prior to October 2010, contain a path traversal vulnerability in the view_help.cgi endpoint. The locale parameter fails to properly sanitize user input, allowing attackers to inject traversal sequences and null-byte terminators to access arbitrary files on the underlying system. By exploiting this flaw, unauthenticated remote attackers can retrieve sensitive configuration files such as /mail/snapshot/config.snapshot, potentially exposing credentials, internal settings, and other critical data.
Frequently asked questions
- What is CVE-2010-20109?
- Barracuda products, confirmed in Spam & Virus Firewall, SSL VPN, and Web Application Firewall versions prior to October 2010, contain a path traversal vulnerability in the view_help.cgi endpoint. The locale parameter fails to properly sanitize user input, allowing attackers to inject traversal sequences and null-byte terminators to access arbitrary files on the underlying system. By exploiting this flaw, unauthenticated remote attackers can retrieve sensitive configuration files such as /mail/snapshot/config.snapshot, potentially exposing credentials, internal settings, and other critical data.
- How severe is CVE-2010-20109?
- CVE-2010-20109 has a CVSS 4.0 base score of 8.7, rated high severity.
- Is CVE-2010-20109 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2010-20109?
- 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-2010-20109 have an EU (EUVD) identifier?
- Yes. CVE-2010-20109 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2010-5318.
- When was CVE-2010-20109 published?
- CVE-2010-20109 was published on 2025-08-21 and last updated on 2026-06-16.
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/scanner/http/barracuda_directory_traversal.rb
- https://web.archive.org/web/20101004131244/http://secunia.com/advisories/41609/
- https://www.exploit-db.com/exploits/15130
- https://www.vulncheck.com/advisories/barracuda-multiple-products-locale-path-traversal
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