How severe is CVE-2006-4000?

CVE-2006-4000 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2006-4000 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-4000?

CVE-2006-4000 primarily affects Barracuda Networks Barracuda Spam Firewall. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-4000?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-4000 published?

CVE-2006-4000 was published on 2006-08-05 and last updated on 2026-06-16.

CVE-2006-4000

CVE-2006-4000 is a medium-severity vulnerability in Barracuda Networks Barracuda Spam Firewall with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Barracuda Networks Barracuda Spam Firewall
Published: 2006-08-05
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2006-4000?: 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.
How severe is CVE-2006-4000?: CVE-2006-4000 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2006-4000 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-4000?: CVE-2006-4000 primarily affects Barracuda Networks Barracuda Spam Firewall. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-4000?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-4000 published?: CVE-2006-4000 was published on 2006-08-05 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:h:barracuda_networks:barracuda_spam_firewall:3.3.01.001:*:*:*:*:*:*:*
cpe:2.3:h:barracuda_networks:barracuda_spam_firewall:3.3.03.053:*:*:*:*:*:*:*
cpe:2.3:h:barracuda_networks:barracuda_spam_firewall:3.3.03.055:*:*:*:*:*:*:*

More vulnerabilities in Barracuda Networks Barracuda Spam Firewall

CVE-2007-1673 — High (CVSS 7.8): unzoo.c, as used in multiple products including AMaViS 2.4.1 and earlier, allows remote attackers to cause a denial of…
CVE-2006-4081 — High (CVSS 7.5): preview_email.cgi in Barracuda Spam Firewall (BSF) 3.3.01.001 through 3.3.03.053 allows remote attackers to execute…
CVE-2006-4001 — High (CVSS 7.5): Login.pm in Barracuda Spam Firewall (BSF) 3.3.01.001 through 3.3.03.053 contains a hard-coded password for the guest…
CVE-2005-2847 — High (CVSS 7.5): img.pl in Barracuda Spam Firewall running firmware 3.1.16 and 3.1.17 allows remote attackers to execute arbitrary…
CVE-2005-0431 — High (CVSS 7.5): Barracuda Spam Firewall 3.1.10 and earlier does not restrict the domains that white-listed domains can send mail to,…
CVE-2006-4082 — High (CVSS 7.2): Barracuda Spam Firewall (BSF), possibly 3.3.03.053, contains a hardcoded password for the admin account for logins from…

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