CVE-1999-0798

Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.

Published: 1998-12-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0798 is rated High Risk (66.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.64%). EPSS rose +1.13% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-1999-0798

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 0.51% 1.64% +1.13%
2 2025-03-30 1.49% 0.51% -0.97%
3 2025-03-29 — 1.49% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0798

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-1999-0798

Affected software / configurations for CVE-1999-0798

Vendor Product Version Raw CPE
bsdi bsd_os — cpe:2.3:o:bsdi:bsd_os:*:*:*:*:*:*:*:*
freebsd freebsd 6.2 cpe:2.3:o:freebsd:freebsd:6.2:stable:*:*:*:*:*:*
openbsd openbsd 2.3 cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:*
openbsd openbsd 2.4 cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:*
redhat linux — cpe:2.3:o:redhat:linux:*:*:*:*:*:*:*:*
sco internet_faststart — cpe:2.3:o:sco:internet_faststart:*:*:*:*:*:*:*:*
sco openserver — cpe:2.3:o:sco:openserver:*:*:*:*:*:*:*:*
sco unixware 7.0 cpe:2.3:o:sco:unixware:7.0:*:*:*:*:*:*:*
sco unixware 7.0.1 cpe:2.3:o:sco:unixware:7.0.1:*:*:*:*:*:*:*

References for CVE-1999-0798

cvelogic Threat Intelligence