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Vulnerability record · CVE-2001-0471 · published 27 June 2001

CVE-2001-0471: Ssh vulnerability

Ssh · Ssh

SSH daemon version 1 (aka SSHD-1 or SSH-1) 1.2.30 and earlier does not log repeated login attempts, which could allow remote attackers to compromise accounts without detection via a brute force attack.

7.5 CVSS 2.0 High EPSS 5.6% · top 7.4%
7.5CVSS 2.0 base score
5.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

SSH daemon version 1 (aka SSHD-1 or SSH-1) 1.2.30 and earlier does not log repeated login attempts, which could allow remote attackers to compromise accounts without detection via a brute force attack.

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/1/160648 ExploitPatchVendor Advisory
http://www.securityfocus.com/bid/2345 ExploitPatchVendor Advisory
http://www.securityfocus.com/archive/1/160648 ExploitPatchVendor Advisory
http://www.securityfocus.com/bid/2345 ExploitPatchVendor Advisory

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Related vulnerabilities

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

10.0CVE-2001-0144Openbsd openssh vulnerabilityCORE SDI SSH1 CRC-32 compensation attack detector allows remote attackers to execute arbitrary commands on an SSH server or client via an integer ove…EPSS 32%10.0CVE-1999-0248Ssh vulnerabilityA race condition in the authentication agent mechanism of sshd 1.2.17 allows an attacker to steal another user's credentials.EPSS 1.6%8.4CVE-1999-0013Ssh insufficiently protected credentials vulnerabilityStolen credentials from SSH clients via ssh-agent program, allowing other local users to access remote accounts belonging to the ssh-agent user.EPSS 1.1%7.8CVE-2011-0766Erlang crypto vulnerabilityThe random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP ssh library before R14B03, uses…EPSS 3.1%7.5CVE-2001-0572Openbsd openssh vulnerabilityThe SSH protocols 1 and 2 (aka SSH-2) as implemented in OpenSSH and other packages have various weaknesses which can allow a remote attacker to obtai…EPSS 7.1%7.5CVE-2001-1473Ssh vulnerabilityThe SSH-1 protocol allows remote servers to conduct man-in-the-middle attacks and replay a client challenge response to a target server by creating a…EPSS 6.3%7.5CVE-2001-1475Ssh vulnerabilitySSH before 2.0, when using RC4 and password authentication, allows remote attackers to replay messages until a new server key (VK) is generated.EPSS 1.5%7.5CVE-2001-1476Ssh vulnerabilitySSH before 2.0, with RC4 encryption and the "disallow NULL passwords" option enabled, makes it easier for remote attackers to guess portions of user …EPSS 1.0%

Source: NIST National Vulnerability Database (record CVE-2001-0471), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.