CVE-2003-1206: Format string vulnerability in Crob FTP Server 2.60.1 allows remote attackers to cause a denial of service (cr

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MEDIUM 5.0DOWNGRADE

CVE-2003-1206 is a medium-severity flaw (CVSS 5.0) affecting crob ftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in Crob FTP Server 2.60.1 allows remote attackers to cause a denial of service (crash) via "%s" or "%n" sequences in (1) the username during login, or other FTP commands such as (2) dir.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2003-06-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: crob

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

Am I affected?

Timeline

2003-06-03 04:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

crob crob ftp server DOWNGRADE

Affected: 2.60.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.60.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.60.1 (Debian / Ubuntu)

apt-cache madison crob-ftp-server sudo apt install crob-ftp-server=<VERSION_BEFORE_2.60.1> sudo apt-mark hold crob-ftp-server

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

dnf --showduplicates list crob-ftp-server sudo dnf downgrade crob-ftp-server-<VERSION_BEFORE_2.60.1> sudo dnf versionlock add crob-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-2003-1206?

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

Is CVE-2003-1206 being exploited?

CVE-2003-1206 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-2003-1206 affect?

CVE-2003-1206 affects crob ftp server. Severity is medium (CVSS 5.0). Format string vulnerability in Crob FTP Server 2.60.1 allows remote attackers to cause a denial of service (crash) via "%s" or "%n" sequences in (1) the username during login, or other FTP commands such as (2) dir.

How urgent is CVE-2003-1206?

Priority 42/100. Public exploit reference

Related CVEs

CVE-2006-6558 MEDIUM 5.0 DOWNGRADE Crob FTP Server 3.6.1 b.263 allows remote attackers to cause a denial of service via a long series of "?A" seq
CVE-2004-2309 LOW 2.1 DOWNGRADE Directory traversal vulnerability in Crob FTP Server 3.5.1 allows local users to browse outside the FTP root v
CVE-2004-0282 MEDIUM 5.0 DOWNGRADE Crob FTP daemon 3.5.2 allows remote attackers to cause a denial of service (crash) by repeatedly connecting to
CVE-2003-1207 MEDIUM 5.0 DOWNGRADE Crob FTP Server 3.5.1 allows remote authenticated users to cause a denial of service (crash) via a dir command
CVE-2003-1205 MEDIUM 5.0 DOWNGRADE Crob FTP Server 2.60.1 allows remote authenticated users to cause a denial of service (crash) by renaming a fi

References

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