CVE-2003-1369: Buffer overflow in ByteCatcher FTP client 1.04b allows remote attackers to cause a denial of service (crash) a

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MEDIUM 6.8DOWNGRADE

CVE-2003-1369 is a medium-severity flaw (CVSS 6.8) affecting bytecatcherftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in ByteCatcher FTP client 1.04b allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long FTP server banner.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-119
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: save it software pty

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

save it software pty bytecatcherftp DOWNGRADE

Affected: 1.04b

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.04b

1. Check installed version

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

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

apt-cache madison bytecatcherftp sudo apt install bytecatcherftp=<VERSION_BEFORE_1.04b> sudo apt-mark hold bytecatcherftp

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

dnf --showduplicates list bytecatcherftp sudo dnf downgrade bytecatcherftp-<VERSION_BEFORE_1.04b> sudo dnf versionlock add bytecatcherftp

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: ByteCatcher FTP Client 1.0.4 - 'Server Banner' Buffer Overflow

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-2003-1369?

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

Is CVE-2003-1369 being exploited?

CVE-2003-1369 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-2003-1369 affect?

CVE-2003-1369 affects bytecatcherftp. Severity is medium (CVSS 6.8). Buffer overflow in ByteCatcher FTP client 1.04b allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long FTP server banner.

How urgent is CVE-2003-1369?

Priority 51/100. Public exploit reference

References

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