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CVE-2003-0466

Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may...

9.8 CriticalPublic exploitFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

78.1%Up 43.9 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2003-0466
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-193
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2003-0466
Updated
2026-11-02
EUVDEUVD-2003-0460 No score

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.

Record
EUVD-2003-0460
Updated
2026-11-03
GitHub AdvisoriesGHSA-7c4w-gm97-vgqq No score

Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may...

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.

Record
GHSA-7c4w-gm97-vgqq
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wu-ftpd
Debian:3.0
 before 2.6.2-3woody1
2.6.2-3woody1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBWU-FTPD 2.6.2 - 'realpath()' Off-by-One Buffer Overflow2003-08-02
Exploit-DBWU-FTPD 2.6.0/2.6.1/2.6.2 - 'realpath()' Off-by-One Buffer Overflow2003-08-06
Exploit-DBFreeBSD 4.8 - 'realpath()' Off-by-One Buffer Overflow2003-07-31
Exploit-DBWU-FTPD 2.6.2 - Off-by-One Remote Command Execution2003-08-03
Exploit-DBWU-FTPD 2.6.2 - Remote Command Execution2003-08-11

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2003-0466 is a critical vulnerability (CVSS 9.8) in Wuftpd Wu-ftpd, published July 31, 2003. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 78.1%, the 99th percentile. Fixed in wu-ftpd 2.6.2-3woody1.

References

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