How severe is CVE-2009-1031?

CVE-2009-1031 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-1031 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1031?

CVE-2009-1031 primarily affects Solarwinds Serv-u File Server. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1031?

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.

When was CVE-2009-1031 published?

CVE-2009-1031 was published on 2009-03-20 and last updated on 2026-06-16.

CVE-2009-1031

CVE-2009-1031 is a high-severity vulnerability in Solarwinds Serv-u File Server with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Solarwinds Serv-u File Server
Published: 2009-03-20
Last modified: 2026-06-16

Description

Directory traversal vulnerability in the FTP server in Rhino Software Serv-U File Server 7.0.0.1 through 7.4.0.1 allows remote attackers to create arbitrary directories via a \.. (backslash dot dot) in an MKD request.

Frequently asked questions

What is CVE-2009-1031?: Directory traversal vulnerability in the FTP server in Rhino Software Serv-U File Server 7.0.0.1 through 7.4.0.1 allows remote attackers to create arbitrary directories via a \.. (backslash dot dot) in an MKD request.
How severe is CVE-2009-1031?: CVE-2009-1031 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-1031 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1031?: CVE-2009-1031 primarily affects Solarwinds Serv-u File Server. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1031?: 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.
When was CVE-2009-1031 published?: CVE-2009-1031 was published on 2009-03-20 and last updated on 2026-06-16.

References

Affected products (14)

cpe:2.3:a:solarwinds:serv-u_file_server:7.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.0.0.4:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.3.0.0:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u_file_server:7.4.0.1:*:*:*:*:*:*:*

More vulnerabilities in Solarwinds Serv-u File Server

CVE-2009-4006 — Critical (CVSS 10.0): Stack-based buffer overflow in the TEA decoding algorithm in RhinoSoft Serv-U FTP server 7.0.0.1, 9.0.0.5, and other…
CVE-2004-2532 — Critical (CVSS 10.0): Serv-U FTP server before 5.1.0.0 has a default account and password for local administration, which allows local users…
CVE-2004-0330 — Critical (CVSS 10.0): Buffer overflow in Serv-U ftp before 5.0.0.4 allows remote authenticated users to execute arbitrary code via a long…
CVE-2011-4800 — Critical (CVSS 9.0): Directory traversal vulnerability in Serv-U FTP Server before 11.1.0.5 allows remote authenticated users to read and…
CVE-2008-4501 — Critical (CVSS 9.0): Directory traversal vulnerability in the FTP server in Serv-U 7.0.0.1 through 7.3, including 7.2.0.1, allows remote…
CVE-2004-2111 — High (CVSS 8.5): Stack-based buffer overflow in the site chmod command in Serv-U FTP Server before 4.2 allows remote attackers to…

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