CVE-2005-1646: The default installation of Fastream NETFile FTP/Web Server 7.4.6, which supports FXP, does not require that t

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HIGH 7.5DOWNGRADE

CVE-2005-1646 is a high-severity flaw (CVSS 7.5) affecting netfile ftp web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The default installation of Fastream NETFile FTP/Web Server 7.4.6, which supports FXP, does not require that the IP address in a PORT command be the same as the IP of the logged in user, which allows remote attackers to conduct FTP Bounce attacks to bypass firewall rules or cause a denial of service.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Published	2005-05-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: fastream

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

Am I affected?

Timeline

2005-05-18 04:00 UTCPublished CVE record published
2026-06-16 22:13 UTCUpdated Record last modified

fastream netfile ftp web server DOWNGRADE

Affected: 7.4.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.4.6

1. Check installed version

apt-cache policy netfile-ftp-web-server || rpm -q netfile-ftp-web-server || netfile-ftp-web-server --version

2. No fixed release: DOWNGRADE to a release before 7.4.6 (Debian / Ubuntu)

apt-cache madison netfile-ftp-web-server sudo apt install netfile-ftp-web-server=<VERSION_BEFORE_7.4.6> sudo apt-mark hold netfile-ftp-web-server

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

dnf --showduplicates list netfile-ftp-web-server sudo dnf downgrade netfile-ftp-web-server-<VERSION_BEFORE_7.4.6> sudo dnf versionlock add netfile-ftp-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.

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-2005-1646?

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

Is CVE-2005-1646 being exploited?

CVE-2005-1646 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-2005-1646 affect?

CVE-2005-1646 affects netfile ftp web server. Severity is high (CVSS 7.5). The default installation of Fastream NETFile FTP/Web Server 7.4.6, which supports FXP, does not require that the IP address in a PORT command be the same as the IP of the logged in user, which allows remote attackers to conduct FTP Bounce a

How urgent is CVE-2005-1646?

Priority 51/100. High severity; Public exploit reference

Related CVEs

CVE-2004-1941 MEDIUM 5.0 DOWNGRADE Fastream NETFile FTP/Web Server 6.5.1.980 allows remote attackers to cause a denial of service via a username
CVE-2004-0677 MEDIUM 5.0 UPGRADE Fastream NETFile FTP Server 6.7.2.1085 and earlier allows remote attackers to cause a denial of service (tempo
CVE-2004-0676 HIGH 10.0 DOWNGRADE Directory traversal vulnerability in Fastream NETFile FTP/Web Server 6.7.2.1085 and earlier allows remote atta

References

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