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Vulnerability record · CVE-2000-1033 · published 11 December 2000

CVE-2000-1033: Cat soft serv-u vulnerability

Cat Soft · Serv U

Serv-U FTP Server allows remote attackers to bypass its anti-hammering feature by first logging on as a valid user (possibly anonymous) and then attempting to guess the passwords of other users.

7.5 CVSS 2.0 High EPSS 7.6% · top 5.7%
7.5CVSS 2.0 base score
7.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
23 Sep 2026Last modified by NVD

Description

Serv-U FTP Server allows remote attackers to bypass its anti-hammering feature by first logging on as a valid user (possibly anonymous) and then attempting to guess the passwords of other users.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/archive/1/141905
http://www.securityfocus.com/bid/1860 ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5436
http://www.securityfocus.com/archive/1/141905
http://www.securityfocus.com/bid/1860 ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5436

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-1999-0219Cat soft serv-u vulnerabilityBuffer overflow in FTP Serv-U 2.5 allows remote authenticated users to cause a denial of service (crash) via a long (1) CWD or (2) LS (list) command.EPSS 9.1%5.0CVE-2000-0176Cat soft serv-u vulnerabilityThe default configuration of Serv-U 2.5d and earlier allows remote attackers to determine the real pathname of the server by requesting a URL for a d…EPSS 2.1%

Source: NIST National Vulnerability Database (record CVE-2000-1033), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.