CVE-2002-0126: Buffer overflow in BlackMoon FTP Server 1.0 through 1.5 allows remote attackers to execute arbitrary code via

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HIGH 7.5DOWNGRADE

CVE-2002-0126 is a high-severity flaw (CVSS 7.5) affecting blackmoon ftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in BlackMoon FTP Server 1.0 through 1.5 allows remote attackers to execute arbitrary code via a long argument to (1) USER, (2) PASS, or (3) CWD.

Why this priority

High severity
EPSS top 9%: very likely to be exploited

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.2% (top 9%)
CISA exploited list	No
Published	2002-03-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: selom ofori

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

Am I affected?

Timeline

2002-03-25 05:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

selom ofori blackmoon ftp server DOWNGRADE

Affected: 1.0 · 1.1 · 1.2 · 1.3 · 1.4 · 1.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison blackmoon-ftp-server sudo apt install blackmoon-ftp-server=<VERSION_BEFORE_1.0> sudo apt-mark hold blackmoon-ftp-server

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

dnf --showduplicates list blackmoon-ftp-server sudo dnf downgrade blackmoon-ftp-server-<VERSION_BEFORE_1.0> sudo dnf versionlock add blackmoon-ftp-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-2002-0126?

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

Is CVE-2002-0126 being exploited?

CVE-2002-0126 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-2002-0126 affect?

CVE-2002-0126 affects blackmoon ftp server. Severity is high (CVSS 7.5). Buffer overflow in BlackMoon FTP Server 1.0 through 1.5 allows remote attackers to execute arbitrary code via a long argument to (1) USER, (2) PASS, or (3) CWD.

How urgent is CVE-2002-0126?

Priority 49/100. High severity; EPSS top 9%: very likely to be exploited

Related CVEs

CVE-2011-0507 MEDIUM 4.3 DOWNGRADE FTPService.exe in Blackmoon FTP 3.1 Build 1735 and Build 1736 (3.1.7.1736), and possibly other versions before
CVE-2003-0343 MEDIUM 4.6 DOWNGRADE BlackMoon FTP Server 2.6 Free Edition, and possibly other distributions and versions, generates an "Account do
CVE-2003-0342 MEDIUM 4.6 DOWNGRADE BlackMoon FTP Server 2.6 Free Edition, and possibly other distributions and versions, stores user names and pa

References

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