CVE-2006-4000

Exp

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.

Published: 2006-08-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-4000 is rated High Exploit Risk (64.7/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.58%, 92th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.57% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2006-4000

EDB-ID Source Kind Published Link
28321 exploit_db edb 2006-08-01 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2006-4000

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 4.01% 5.58% +1.57%
2 2025-03-30 6.99% 4.01% -2.98%
3 2025-03-29 — 6.99% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-4000

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2006-4000

Affected software / configurations for CVE-2006-4000

Vendor Product Version Raw CPE
barracuda_networks barracuda_spam_firewall 3.3.01.001 cpe:2.3:h:barracuda_networks:barracuda_spam_firewall:3.3.01.001:*:*:*:*:*:*:*
barracuda_networks barracuda_spam_firewall 3.3.03.053 cpe:2.3:h:barracuda_networks:barracuda_spam_firewall:3.3.03.053:*:*:*:*:*:*:*
barracuda_networks barracuda_spam_firewall 3.3.03.055 cpe:2.3:h:barracuda_networks:barracuda_spam_firewall:3.3.03.055:*:*:*:*:*:*:*

References for CVE-2006-4000

cvelogic Threat Intelligence