Is CVE-2006-4000 being actively exploited?

CVE-2006-4000 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2006-4000?

CVE-2006-4000 has a CVSS 2.0 base score of 4.0 (MEDIUM).

CVE-2006-4000

MEDIUM · CVSS 4.0EPSS 5.8%EU EUVD

Directory traversal vulnerability in cgi-bin/preview_email.cgi in Barracuda Spam Firewall (BSF) 3.3.01.001 through 3.3.03.053 allows remote authenticated users to read arbitrary files via a .. (dot dot) in the file parameter.

Key facts

CVSS score: 4.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:S/C:P/I:N/A:N
EPSS score: 5.8% (93th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2006-3993)
Published: August 5, 2006
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2006-3993 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

barracuda networks / barracuda spam firewall
barracuda networks / barracuda spam firewall
barracuda networks / barracuda spam firewall

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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