CVE-1999-0099

Buffer overflow in syslog utility allows local or remote attackers to gain root privileges.

Published: 1995-10-19 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0099 is rated High Risk (72.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.19%). EPSS rose +1.82% 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-1999-0099

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 1.38% 3.19% +1.82%
2 2025-03-30 2.63% 1.38% -1.26%
3 2025-03-29 — 2.63% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0099

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-1999-0099

OS Trackers for CVE-1999-0099

vendor priority summary link
alpine — CVE-1999-0099: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-1999-0099

Affected software / configurations for CVE-1999-0099

Vendor Product Version Raw CPE
bsdi bsd_os 2.0 cpe:2.3:o:bsdi:bsd_os:2.0:*:*:*:*:*:*:*
bsdi bsd_os 2.0.1 cpe:2.3:o:bsdi:bsd_os:2.0.1:*:*:*:*:*:*:*
convex convexos 10.1 cpe:2.3:o:convex:convexos:10.1:*:*:*:*:*:*:*
convex convexos 10.2 cpe:2.3:o:convex:convexos:10.2:*:*:*:*:*:*:*
convex convexos 11.0 cpe:2.3:o:convex:convexos:11.0:*:*:*:*:*:*:*
convex convexos 11.1 cpe:2.3:o:convex:convexos:11.1:*:*:*:*:*:*:*
convex spp-ux 3 cpe:2.3:o:convex:spp-ux:3:*:*:*:*:*:*:*
cray unicos 8.0 cpe:2.3:o:cray:unicos:8.0:*:*:*:*:*:*:*
cray unicos 8.3 cpe:2.3:o:cray:unicos:8.3:*:*:*:*:*:*:*
cray unicos 9.0 cpe:2.3:o:cray:unicos:9.0:*:*:*:*:*:*:*
ibm aix 3.2 cpe:2.3:o:ibm:aix:3.2:*:*:*:*:*:*:*
ibm aix 4.1 cpe:2.3:o:ibm:aix:4.1:*:*:*:*:*:*:*
sun solaris 2.4 cpe:2.3:o:sun:solaris:2.4:*:x86:*:*:*:*:*
sun sunos 4.1.3 cpe:2.3:o:sun:sunos:4.1.3:*:*:*:*:*:*:*
sun sunos 4.1.3u1 cpe:2.3:o:sun:sunos:4.1.3u1:*:*:*:*:*:*:*
sun sunos 4.1.4 cpe:2.3:o:sun:sunos:4.1.4:*:*:*:*:*:*:*
sun sunos 5.3 cpe:2.3:o:sun:sunos:5.3:*:*:*:*:*:*:*
sun sunos 5.4 cpe:2.3:o:sun:sunos:5.4:*:*:*:*:*:*:*

References for CVE-1999-0099

cvelogic Threat Intelligence