CVE-2009-4809

Exp

Directory traversal vulnerability in thumbnail.ghp in Easy File Sharing (EFS) Web Server 4.8 allows remote attackers to read arbitrary files via a .. (dot dot) in the vfolder parameter.

Published: 2010-04-23 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4809 is rated High Exploit Risk (67.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.77%). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.98% 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-2009-4809

EDB-ID Source Kind Published Link
8155 exploit_db edb 2009-03-04 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-4809

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 2026-01-02 1.79% 3.77% +1.98%
2 2025-03-30 3.36% 1.79% -1.58%
3 2025-03-29 — 3.36% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4809

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/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:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-4809

Affected software / configurations for CVE-2009-4809

Vendor Product Version Raw CPE
sharing-file easy_file_sharing_web_server 4.8 cpe:2.3:a:sharing-file:easy_file_sharing_web_server:4.8:*:*:*:*:*:*:*

References for CVE-2009-4809

cvelogic Threat Intelligence