CVE-2001-1300: Directory traversal vulnerability in Dynu FTP server 1.05 and earlier allows remote attackers to read arbitrar

This month

MEDIUM 5.0DOWNGRADE

CVE-2001-1300 is a medium-severity flaw (CVSS 5.0) affecting dynu ftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in Dynu FTP server 1.05 and earlier allows remote attackers to read arbitrary files via a .. in the CD (CWD) command.

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	2.0% (top 19%)
CISA exploited list	No
Published	2002-06-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: dynu systems inc.

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

Am I affected?

Timeline

2002-06-25 04:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

dynu systems inc. dynu ftp server DOWNGRADE

Affected: 1.04 · 1.05

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.04

1. Check installed version

apt-cache policy dynu-ftp-server || rpm -q dynu-ftp-server || dynu-ftp-server --version

2. No fixed release: DOWNGRADE to a release before 1.04 (Debian / Ubuntu)

apt-cache madison dynu-ftp-server sudo apt install dynu-ftp-server=<VERSION_BEFORE_1.04> sudo apt-mark hold dynu-ftp-server

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

dnf --showduplicates list dynu-ftp-server sudo dnf downgrade dynu-ftp-server-<VERSION_BEFORE_1.04> sudo dnf versionlock add dynu-ftp-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.

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-2001-1300?

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

Is CVE-2001-1300 being exploited?

CVE-2001-1300 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-2001-1300 affect?

CVE-2001-1300 affects dynu ftp server. Severity is medium (CVSS 5.0). Directory traversal vulnerability in Dynu FTP server 1.05 and earlier allows remote attackers to read arbitrary files via a .. in the CD (CWD) command.

How urgent is CVE-2001-1300?

Priority 43/100. Public exploit reference

References

← Back to latest CVEs