$ cve CVE-2003-0466 JSON

CVE-2003-0466 EXPLOIT

9.8

CRITICAL · CVSS 3.1 · EPSS 78.1% (pctl 100)

Patch early

A public exploit exists.

Description

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) DELE, (5) MKD, (6) RMD, (7) STOU, or (8) RNTO.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	78.12% — more likely to be exploited than 100% of all CVEs
Weakness	CWE-193
On CISA KEV	no
Public exploit	yes
Published	2003-08-27
Last modified	2026-06-16

Affected (8)

Vendor	Product
apple	mac os x
apple	mac os x server
freebsd	freebsd
netbsd	netbsd
openbsd	openbsd
redhat	wu ftpd
sun	solaris
wuftpd	wu-ftpd

Public exploits

Source	Title	Date
exploit-db	WU-FTPD 2.6.2 - Remote Command Execution	2003-08-11
exploit-db	WU-FTPD 2.6.0/2.6.1/2.6.2 - 'realpath()' Off-by-One Buffer Overflow	2003-08-06
exploit-db	WU-FTPD 2.6.2 - Off-by-One Remote Command Execution	2003-08-03
exploit-db	WU-FTPD 2.6.2 - 'realpath()' Off-by-One Buffer Overflow	2003-08-02
exploit-db	FreeBSD 4.8 - 'realpath()' Off-by-One Buffer Overflow	2003-07-31

References

→ the Explorer · watch your stack · NVD