What is CVE-1999-0783?

CVE-1999-0783 is a medium-severity vulnerability in FreeBSD, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 1998-06-16.

How severe is CVE-1999-0783?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in FreeBSD

CVE-1999-0783

FreeBSD allows local users to conduct a denial of service by creating a hard link from a device special file to a file on an NFS file system.

Published 1998-06-16 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (53.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

FreeBSD — versions 2.2

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

www.ciac.org/ciac/bulletins/i-057.shtml (government-resource, Broken Link, third-party-advisory)
www.osvdb.org/6090 (vdb-entry, Broken Link)

Frequently asked questions

What is CVE-1999-0783?: CVE-1999-0783 is a medium-severity vulnerability in FreeBSD, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 1998-06-16.
How severe is CVE-1999-0783?: Medium severity. CVSS v3 base score is 5.5 out of 10.