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Vulnerability record · CVE-1999-0398 · published 1 January 1999

CVE-1999-0398: Ssh vulnerability

Ssh · Ssh

In some instances of SSH 1.2.27 and 2.0.11 on Linux systems, SSH will allow users with expired accounts to login.

4.6 CVSS 2.0 Medium EPSS 0.39% · top 69.7%
4.6CVSS 2.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
16 Jun 2026Last modified by NVD

Description

In some instances of SSH 1.2.27 and 2.0.11 on Linux systems, SSH will allow users with expired accounts to login.

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

Affected products

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

References

LinkTags
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0398
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0398

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Related vulnerabilities

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

10.0CVE-2002-1645Ssh2 vulnerabilityBuffer overflow in the URL catcher feature for SSH Secure Shell for Workstations client 3.1 to 3.2.0 allows remote attackers to execute arbitrary cod…EPSS 7.9%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-2001-0471Ssh vulnerabilitySSH 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 …EPSS 5.6%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%

Source: NIST National Vulnerability Database (record CVE-1999-0398), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.