CVE-1999-1214

The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notification, which allows local users to cause a denial of service by using certain ioctl and fcntl calls to cause the signal to be sent to an arbitrary process ID.

Published: 1997-09-15 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1214 is rated Low Risk (15.9/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.08%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

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-1999-1214

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 2025-03-17 0.04% 0.08% +0.04%
2 2023-03-07 0.95% 0.04% -0.91%
3 2022-02-04 — 0.95% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1214

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
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.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-1999-1214

Affected software / configurations for CVE-1999-1214

Vendor Product Version Raw CPE
sgi irix — cpe:2.3:o:sgi:irix:*:*:*:*:*:*:*:*
bsd bsd — cpe:2.3:o:bsd:bsd:*:*:*:*:*:*:*:*
bsd bsd 4.4 cpe:2.3:o:bsd:bsd:4.4:*:*:*:*:*:*:*
freebsd freebsd 6.2 cpe:2.3:o:freebsd:freebsd:6.2:stable:*:*:*:*:*:*
netbsd netbsd 2.0.4 cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*
openbsd openbsd 2.1 cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:*

References for CVE-1999-1214

cvelogic Threat Intelligence