CVE-2005-2078: BisonFTP Server V4R1 allows remote authenticated users to cause a denial of service via an invalid command wit

Routine

LOW 2.1DOWNGRADE

CVE-2005-2078 is a low-severity flaw (CVSS 2.1) affecting bisonftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BisonFTP Server V4R1 allows remote authenticated users to cause a denial of service via an invalid command with a long argument.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2005-06-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sofotex

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

Am I affected?

Timeline

2005-06-29 04:00 UTCPublished CVE record published
2026-06-16 22:14 UTCUpdated Record last modified

sofotex bisonftp DOWNGRADE

Affected: v4r1

Fixed in: no fixed release known

Safe to downgrade to: a release before v4r1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before v4r1 (Debian / Ubuntu)

apt-cache madison bisonftp sudo apt install bisonftp=<VERSION_BEFORE_v4r1> sudo apt-mark hold bisonftp

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

dnf --showduplicates list bisonftp sudo dnf downgrade bisonftp-<VERSION_BEFORE_v4r1> sudo dnf versionlock add bisonftp

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: BisonFTP 4R1 - Remote 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-2005-2078?

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

Is CVE-2005-2078 being exploited?

CVE-2005-2078 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-2005-2078 affect?

CVE-2005-2078 affects bisonftp. Severity is low (CVSS 2.1). BisonFTP Server V4R1 allows remote authenticated users to cause a denial of service via an invalid command with a long argument.

How urgent is CVE-2005-2078?

Priority 32/100. Public exploit reference

Related CVEs

CVE-2015-7602 HIGH 7.8 DOWNGRADE Directory traversal vulnerability in BisonWare BisonFTP 3.5 allows remote attackers to read arbitrary files vi

References

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