Which products and versions are affected by CVE-2003-0466?

Affected: Wu Ftpd (Redhat) versions 2.6.1-16; Mac OS X (Apple) versions 10.2.6; Mac OS X Server (Apple) versions 10.2.6, among others. The full list is in the CVE brief.

Is CVE-2003-0466 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2003-0466 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2003-0466?

Public exploit code is available.

Is there a fix for CVE-2003-0466?

Fixed versions are available, including Freebsd 5.0, Netbsd 1.6.1, Openbsd 3.3.

How urgently should CVE-2003-0466 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2003-0466

CriticalPublic exploit

Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may allow attackers to execute arbitrary code, as demonstrated in wu-ftpd 2.5.0 through 2.6.2 via commands that cause pathnames of length MAXPATHLEN+1 to trigger a buffer overflow,…

Published Jul 31, 2003 · Updated Mar 9, 2026 · Also known as DEBIAN-CVE-2003-0466, DSA-357

Key Facts

Patch immediately

CVE-2003-0466 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Wu Ftpd (Redhat), Mac OS X (Apple), Mac OS X Server (Apple) and 4 more products.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 78% probability of exploitation in the next 30 days.
Fixed versions are available, including Freebsd 5.0, Netbsd 1.6.1, Openbsd 3.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

78%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2003-0466 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

9 affected entries in total

Product	Affected versions	Fixed in
Wu FtpdRedhat	2.6.1-16	2.6.2
Mac OS XApple	10.2.6	n/a
Mac OS X ServerApple	10.2.6	n/a
FreebsdFreebsd	See advisory	5.0
NetbsdNetbsd	See advisory	1.6.1

2 more affected products in the full CVE brief

Patched Releases

Freebsd

5.0

Netbsd

1.6.1

Openbsd

3.3

Wu Ftpd

2.6.2-3woody1

wuftpd wu-ftpd

2.6.2

Timeline

Publicly disclosed
Jul 31, 2003
Last updated
Mar 9, 2026

Weakness Type

CWE-193 Off-by-one Error

References

advisoryRHSA-2003:245
advisoryRHSA-2003:246
advisory1007380
advisorylibc-realpath-offbyone-bo(12785)
advisoryVU#743092

15 more references in the full CVE brief

FAQ

Common Questions.

Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may allow attackers to execute arbitrary code, as demonstrated in wu-ftpd 2.5.0 through 2.6.2 via commands that cause pathnames of length MAXPATHLEN+1 to trigger a buffer overflow, including (1) STOR, (2) RETR, (3) APPE, (4)…
Affected: Wu Ftpd (Redhat) versions 2.6.1-16; Mac OS X (Apple) versions 10.2.6; Mac OS X Server (Apple) versions 10.2.6, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Freebsd 5.0, Netbsd 1.6.1, Openbsd 3.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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