CVE-1999-0478

Denial of service in HP-UX sendmail 8.8.6 related to accepting connections.

Published: 1998-12-01 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0478 is rated Moderate Risk (44.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.40%). 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-1999-0478

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 0.63% 1.40% +0.77%
2 2025-12-28 0.50% 0.63% +0.12%
3 2025-12-27 — 0.50% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0478

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/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:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-1999-0478

Affected software / configurations for CVE-1999-0478

Vendor Product Version Raw CPE
sendmail sendmail <= 8.9.2 cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:*

References for CVE-1999-0478

cvelogic Threat Intelligence