CVE-1999-1029

SSH server (sshd2) before 2.0.12 does not properly record login attempts if the connection is closed before the maximum number of tries, allowing a remote attacker to guess the password without showing up in the audit logs.

Published: 1999-05-13 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1029 is rated Moderate Risk (56.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.57%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-1999-1029

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.70% 1.57% +0.87%
2 2024-12-17 0.86% 0.70% -0.17%
3 2023-03-07 — 0.86% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1029

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-1999-1029

Affected software / configurations for CVE-1999-1029

Vendor Product Version Raw CPE
ssh ssh2 2.0 cpe:2.3:a:ssh:ssh2:2.0:*:*:*:*:*:*:*
ssh ssh2 2.0.1 cpe:2.3:a:ssh:ssh2:2.0.1:*:*:*:*:*:*:*
ssh ssh2 2.0.2 cpe:2.3:a:ssh:ssh2:2.0.2:*:*:*:*:*:*:*
ssh ssh2 2.0.3 cpe:2.3:a:ssh:ssh2:2.0.3:*:*:*:*:*:*:*
ssh ssh2 2.0.4 cpe:2.3:a:ssh:ssh2:2.0.4:*:*:*:*:*:*:*
ssh ssh2 2.0.5 cpe:2.3:a:ssh:ssh2:2.0.5:*:*:*:*:*:*:*
ssh ssh2 2.0.6 cpe:2.3:a:ssh:ssh2:2.0.6:*:*:*:*:*:*:*
ssh ssh2 2.0.7 cpe:2.3:a:ssh:ssh2:2.0.7:*:*:*:*:*:*:*
ssh ssh2 2.0.8 cpe:2.3:a:ssh:ssh2:2.0.8:*:*:*:*:*:*:*
ssh ssh2 2.0.9 cpe:2.3:a:ssh:ssh2:2.0.9:*:*:*:*:*:*:*
ssh ssh2 2.0.10 cpe:2.3:a:ssh:ssh2:2.0.10:*:*:*:*:*:*:*
ssh ssh2 2.0.11 cpe:2.3:a:ssh:ssh2:2.0.11:*:*:*:*:*:*:*

References for CVE-1999-1029

cvelogic Threat Intelligence