What is CVE-1999-0239?

CVE-1999-0239 is a high-severity vulnerability in Netscape Fasttrack Server, classified under Improper Handling of Case Sensitivity. CVSS score: 7.5/10. Published 1998-01-01.

How severe is CVE-1999-0239?

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

Vulnerability in Netscape Fasttrack Server

CVE-1999-0239

Netscape FastTrack Web server lists files when a lowercase "get" command is used instead of an uppercase GET.

Published 1998-01-01 · 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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.076 (94.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.074 · newest: 0.076 · change: +0.001

Affected products

Netscape Fasttrack Server — versions 3.01

Weakness classification (CWE)

CWE-178 — Improper Handling of Case Sensitivity

References

www.osvdb.org/122 (vdb-entry, Broken Link)
exchange.xforce.ibmcloud.com/vulnerabilities/1731 (Third Party Advisory)

Frequently asked questions

What is CVE-1999-0239?: CVE-1999-0239 is a high-severity vulnerability in Netscape Fasttrack Server, classified under Improper Handling of Case Sensitivity. CVSS score: 7.5/10. Published 1998-01-01.
How severe is CVE-1999-0239?: High severity. CVSS v3 base score is 7.5 out of 10.