CVE-2003-1329: ftpd.c in wu-ftpd 2.6.2, when running on "operating systems that only allow one non-connected socket bound to

This month

HIGH 7.8DOWNGRADE

CVE-2003-1329 is a high-severity flaw (CVSS 7.8) affecting wu-ftpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ftpd.c in wu-ftpd 2.6.2, when running on "operating systems that only allow one non-connected socket bound to the same local address," does not close failed connections, which allows remote attackers to cause a denial of service.

Why this priority

High severity

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

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: washington university

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 22:03 UTCUpdated Record last modified

washington university wu-ftpd DOWNGRADE

Affected: 2.6.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6.2

1. Check installed version

apt-cache policy wu-ftpd || rpm -q wu-ftpd || wu-ftpd --version

2. No fixed release: DOWNGRADE to a release before 2.6.2 (Debian / Ubuntu)

apt-cache madison wu-ftpd sudo apt install wu-ftpd=<VERSION_BEFORE_2.6.2> sudo apt-mark hold wu-ftpd

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

dnf --showduplicates list wu-ftpd sudo dnf downgrade wu-ftpd-<VERSION_BEFORE_2.6.2> sudo dnf versionlock add wu-ftpd

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-2003-1329?

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

Is CVE-2003-1329 being exploited?

CVE-2003-1329 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-2003-1329 affect?

CVE-2003-1329 affects wu-ftpd. Severity is high (CVSS 7.8). ftpd.c in wu-ftpd 2.6.2, when running on "operating systems that only allow one non-connected socket bound to the same local address," does not close failed connections, which allows remote attackers to cause a denial of service.

How urgent is CVE-2003-1329?

Priority 45/100. High severity

Related CVEs

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CVE-2003-1327 HIGH 9.3 UPGRADE Buffer overflow in the SockPrintf function in wu-ftpd 2.6.2 and earlier, when compiled with MAIL_ADMIN option
CVE-2003-0854 LOW 2.1 DOWNGRADE DOWNGRADE ls in the fileutils or coreutils packages allows local users to consume a large amount of memory via a large -

References

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