What is CVE-2004-1135?

CVE-2004-1135 is a vulnerability in Ipswitch Ws FTP Server. Published 2005-01-10.

Is CVE-2004-1135 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Ipswitch Ws FTP Server

CVE-2004-1135

Multiple buffer overflows in WS_FTP Server 5.03 2004.10.14 allow remote attackers to cause a denial of service (service crash) via long (1) SITE, (2) XMKD, (3) MKD, and (4) RNFR commands.

Published 2005-01-10 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.496 (98.9th percentile), scored 2026-10-25.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.496 · newest: 0.496 · change: 0.000

Affected products

Ipswitch Ws FTP Server — versions 5.03

Public proof-of-concept exploits

rapid7/metasploit-framework

References

exchange.xforce.ibmcloud.com/vulnerabilities/18296 (vdb-entry)
marc.info/ (mailing-list)
lists.grok.org.uk/pipermail/full-disclosure/2004-November/029600.html (mailing-list)
www.securiteam.com/exploits/6D00L2KBPG.html

Frequently asked questions

What is CVE-2004-1135?: CVE-2004-1135 is a vulnerability in Ipswitch Ws FTP Server. Published 2005-01-10.
Is CVE-2004-1135 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.