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Vulnerability record · CVE-2000-0960 · published 19 December 2000

CVE-2000-0960: Netscape messaging server vulnerability

Netscape · Messaging Server

The POP3 server in Netscape Messaging Server 4.15p1 generates different error messages for incorrect user names versus incorrect passwords, which allows remote attackers to determine valid users on the system and harvest email addresses for spam abuse.

5.0 CVSS 2.0 Medium EPSS 1.7% · top 23.8%
5.0CVSS 2.0 base score
1.7%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

The POP3 server in Netscape Messaging Server 4.15p1 generates different error messages for incorrect user names versus incorrect passwords, which allows remote attackers to determine valid users on the system and harvest email addresses for spam abuse.

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

Affected products

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

References

LinkTags
http://marc.info/?l=bugtraq&m=97138100426121&w=2
http://www.securityfocus.com/bid/1787 ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5364
http://marc.info/?l=bugtraq&m=97138100426121&w=2
http://www.securityfocus.com/bid/1787 ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5364

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Related vulnerabilities

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

10.0CVE-2000-0961Netscape messaging server vulnerabilityBuffer overflow in IMAP server in Netscape Messaging Server 4.15 Patch 2 allows local users to execute arbitrary commands via a long LIST command.EPSS 2.4%10.0CVE-1999-0005Netscape messaging server vulnerabilityArbitrary command execution via IMAP buffer overflow in authenticate command.EPSS 18%5.0CVE-1999-1532Netscape messaging server vulnerabilityNetscape Messaging Server 3.54, 3.55, and 3.6 allows a remote attacker to cause a denial of service (memory exhaustion) via a series of long RCPT TO …EPSS 2.5%5.0CVE-1999-0007C2net stonghold web server broken cryptographic algorithm vulnerabilityInformation from SSL-encrypted sessions via PKCS #1.EPSS 7.6%

Source: NIST National Vulnerability Database (record CVE-2000-0960), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.