CVE-2006-0355: Helmsman Research (aka CoolUtils) HomeFtp 1.1 allows remote attackers to cause an unspecified denial of servic

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MEDIUM 5.0DOWNGRADE

CVE-2006-0355 is a medium-severity flaw (CVSS 5.0) affecting homeftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Helmsman Research (aka CoolUtils) HomeFtp 1.1 allows remote attackers to cause an unspecified denial of service via a long USER command combined with a long PASS command and an NLST 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	3.1% (top 12%)
CISA exploited list	No
Published	2006-01-22
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: helmsman research

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

Am I affected?

Timeline

2006-01-22 20:03 UTCPublished CVE record published
2026-06-16 22:20 UTCUpdated Record last modified

helmsman research homeftp DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy homeftp || rpm -q homeftp || homeftp --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison homeftp sudo apt install homeftp=<VERSION_BEFORE_1.1> sudo apt-mark hold homeftp

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

dnf --showduplicates list homeftp sudo dnf downgrade homeftp-<VERSION_BEFORE_1.1> sudo dnf versionlock add homeftp

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: HomeFtp 1.1 - 'NLST' Denial of Service

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-2006-0355?

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

Is CVE-2006-0355 being exploited?

CVE-2006-0355 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-2006-0355 affect?

CVE-2006-0355 affects homeftp. Severity is medium (CVSS 5.0). Helmsman Research (aka CoolUtils) HomeFtp 1.1 allows remote attackers to cause an unspecified denial of service via a long USER command combined with a long PASS command and an NLST command.

How urgent is CVE-2006-0355?

Priority 44/100. Public exploit reference

References

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