What is CVE-1999-0052?

CVE-1999-0052 is a high-severity vulnerability in Bsdi BSD OS, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 1998-11-04.

How severe is CVE-1999-0052?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Bsdi BSD OS

CVE-1999-0052

IP fragmentation denial of service in FreeBSD allows a remote attacker to cause a crash.

Published 1998-11-04 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.021 · change: -0.000

Affected products

Bsdi BSD OS — versions 4.0
FreeBSD — versions 1.1.5.1, 2.0, 2.0.5
OpenBSD — versions 2.2, 2.3, 2.4

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

exchange.xforce.ibmcloud.com/vulnerabilities/1389 (vdb-entry)
www.osvdb.org/908 (vdb-entry)

Frequently asked questions

What is CVE-1999-0052?: CVE-1999-0052 is a high-severity vulnerability in Bsdi BSD OS, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 1998-11-04.
How severe is CVE-1999-0052?: High severity. CVSS v3 base score is 7.5 out of 10.