CVE-1999-0323

FreeBSD mmap function allows users to modify append-only or immutable files.

Published: 1998-02-20 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0323 is rated Moderate Risk (60.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.48%). 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-1999-0323

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 2025-03-30 1.40% 0.48% -0.92%
2 2025-03-29 0.48% 1.40% +0.92%
3 2025-03-17 — 0.48% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0323

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-1999-0323

OS Trackers for CVE-1999-0323

vendor priority summary link
alpine — CVE-1999-0323: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-1999-0323

Affected software / configurations for CVE-1999-0323

Vendor Product Version Raw CPE
bsdi bsd_os 3.0 cpe:2.3:o:bsdi:bsd_os:3.0:*:*:*:*:*:*:*
freebsd freebsd 2.2 cpe:2.3:o:freebsd:freebsd:2.2:*:*:*:*:*:*:*
netbsd netbsd 2.0.4 cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*
openbsd openbsd 2.2 cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*

References for CVE-1999-0323

cvelogic Threat Intelligence