CVE-2004-0069: Format string vulnerability in HD Soft Windows FTP Server 1.6 and earlier allows remote attackers to execute a

Q: How do I fix CVE-2004-0069?

windows ftp server: upgrade to newer than 1.6. Exact commands for each OS are on this page.

Q: Is CVE-2004-0069 being exploited?

CVE-2004-0069 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2004-0069 affect?

CVE-2004-0069 affects windows ftp server. Severity is high (CVSS 7.5). Format string vulnerability in HD Soft Windows FTP Server 1.6 and earlier allows remote attackers to execute arbitrary code via format string specifiers in the username, which is processed by the wscanf function.

Q: How urgent is CVE-2004-0069?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

This week

HIGH 7.5UPGRADE

CVE-2004-0069 is a high-severity flaw (CVSS 7.5) affecting windows ftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in HD Soft Windows FTP Server 1.6 and earlier allows remote attackers to execute arbitrary code via format string specifiers in the username, which is processed by the wscanf function.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	9.8% (top 4%)
CISA exploited list	No
Published	2004-02-17
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hd soft

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

Am I affected?

Timeline

2004-02-17 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

hd soft windows ftp server UPGRADE

Affected: <= 1.6

Fixed in: newer than 1.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade windows-ftp-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade windows-ftp-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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: HD Soft Windows FTP Server 1.5/1.6 - 'Username' Format String

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-2004-0069?

windows ftp server: upgrade to newer than 1.6. Exact commands for each OS are on this page.

Is CVE-2004-0069 being exploited?

CVE-2004-0069 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-2004-0069 affect?

CVE-2004-0069 affects windows ftp server. Severity is high (CVSS 7.5). Format string vulnerability in HD Soft Windows FTP Server 1.6 and earlier allows remote attackers to execute arbitrary code via format string specifiers in the username, which is processed by the wscanf function.

How urgent is CVE-2004-0069?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Software pages

Windows vulnerabilities

References

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