CVE-1999-1162

Vulnerability in passwd in SCO UNIX 4.0 and earlier allows attackers to cause a denial of service by preventing users from being able to log into the system.

Published: 1993-05-24 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1162 is rated Moderate Risk (48.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.45%). 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-1999-1162

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 2026-05-12 0.33% 0.45% +0.12%
2 2025-09-29 0.45% 0.33% -0.12%
3 2025-03-30 — 0.45% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1162

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/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:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-1999-1162

Affected software / configurations for CVE-1999-1162

Vendor Product Version Raw CPE
sco open_desktop 1.1 cpe:2.3:o:sco:open_desktop:1.1:*:*:*:*:*:*:*
sco open_desktop 2.0 cpe:2.3:o:sco:open_desktop:2.0:*:*:*:*:*:*:*
sco unix <= 4.0 cpe:2.3:o:sco:unix:*:*:*:*:*:*:*:*

References for CVE-1999-1162

cvelogic Threat Intelligence