CVE-2002-2403: Directory traversal vulnerability in KeyFocus web server 1.0.8 allows remote attackers to read arbitrary files

This month

MEDIUM 5.0DOWNGRADE

CVE-2002-2403 is a medium-severity flaw (CVSS 5.0) affecting kf web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in KeyFocus web server 1.0.8 allows remote attackers to read arbitrary files for recognized MIME type files via "...", "....", ".....", and other multiple dot sequences.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-22
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: key focus

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:01 UTCUpdated Record last modified

key focus kf web server DOWNGRADE

Affected: 1.0.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.8

1. Check installed version

apt-cache policy kf-web-server || rpm -q kf-web-server || kf-web-server --version

2. No fixed release: DOWNGRADE to a release before 1.0.8 (Debian / Ubuntu)

apt-cache madison kf-web-server sudo apt install kf-web-server=<VERSION_BEFORE_1.0.8> sudo apt-mark hold kf-web-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kf-web-server sudo dnf downgrade kf-web-server-<VERSION_BEFORE_1.0.8> sudo dnf versionlock add kf-web-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Key Focus KF Web Server 1.0.8 - Directory Traversal

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-2403?

kf web server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-2403 being exploited?

CVE-2002-2403 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-2403 affect?

CVE-2002-2403 affects kf web server. Severity is medium (CVSS 5.0). Directory traversal vulnerability in KeyFocus web server 1.0.8 allows remote attackers to read arbitrary files for recognized MIME type files via "...", "....", ".....", and other multiple dot sequences.

How urgent is CVE-2002-2403?

Priority 44/100. Public exploit reference

Related CVEs

CVE-2007-3396 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in index.wkf in KeyFocus (KF) web server 3.1.0 allows remote attacker
CVE-2002-1032 HIGH 7.5 UPGRADE Buffer overflow in KeyFocus (KF) web server 1.0.5 and earlier allows remote attackers to cause a denial of ser
CVE-2002-1031 MEDIUM 5.0 DOWNGRADE KeyFocus (KF) web server 1.0.2 allows remote attackers to list directories and read restricted files via an HT

References

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