CVE-2003-0380: Buffer overflow in atftp daemon (atftpd) 0.6.1 and earlier, and possibly later versions, allows remote attacke

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HIGH 7.5DOWNGRADE

CVE-2003-0380 is a high-severity flaw (CVSS 7.5) affecting atftpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in atftp daemon (atftpd) 0.6.1 and earlier, and possibly later versions, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long filename.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	5.8% (top 7%)
CISA exploited list	No
Published	2003-07-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: atftpd

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

Am I affected?

Timeline

2003-07-02 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

atftpd atftpd DOWNGRADE

Affected: 0.6.0 · 0.6.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.6.0 (Debian / Ubuntu)

apt-cache madison atftpd sudo apt install atftpd=<VERSION_BEFORE_0.6.0> sudo apt-mark hold atftpd

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

dnf --showduplicates list atftpd sudo dnf downgrade atftpd-<VERSION_BEFORE_0.6.0> sudo dnf versionlock add atftpd

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: Atftpd 0.6 - 'atftpdx.c' Remote Command Execution

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-2003-0380?

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

Is CVE-2003-0380 being exploited?

CVE-2003-0380 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-2003-0380 affect?

CVE-2003-0380 affects atftpd. Severity is high (CVSS 7.5). Buffer overflow in atftp daemon (atftpd) 0.6.1 and earlier, and possibly later versions, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long filename.

How urgent is CVE-2003-0380?

Priority 55/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

References

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