CVE-2001-0550

Exp

wu-ftpd 2.6.1 allows remote attackers to execute arbitrary commands via a "~{" argument to commands such as CWD, which is not properly handled by the glob function (ftpglob).

Published: 2001-11-30 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-0550 is rated High Exploit Risk (84.8/100): CVSS High severity, with high exploitation likelihood (EPSS 74.76%, 99th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +13.88% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2001-0550

EDB-ID Source Kind Published Link
348 exploit_db edb 2002-05-14 Exploit-DB ↗
21161 exploit_db edb 2001-11-27 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2001-0550

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 60.88% 74.76% +13.88%
2 2026-02-17 59.99% 60.88% +0.90%
3 2026-01-15 — 59.99% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-0550

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2001-0550

OS Trackers for CVE-2001-0550

vendor priority summary link
redhat critical — https://access.redhat.com/security/cve/CVE-2001-0550

Affected software / configurations for CVE-2001-0550

Vendor Product Version Raw CPE
david_madore ftpd-bsd 0.3.2 cpe:2.3:a:david_madore:ftpd-bsd:0.3.2:*:*:*:*:*:*:*
david_madore ftpd-bsd 0.3.3 cpe:2.3:a:david_madore:ftpd-bsd:0.3.3:*:*:*:*:*:*:*
washington_university wu-ftpd 2.5.0 cpe:2.3:a:washington_university:wu-ftpd:2.5.0:*:*:*:*:*:*:*
washington_university wu-ftpd 2.6.0 cpe:2.3:a:washington_university:wu-ftpd:2.6.0:*:*:*:*:*:*:*
washington_university wu-ftpd 2.6.1 cpe:2.3:a:washington_university:wu-ftpd:2.6.1:*:*:*:*:*:*:*

References for CVE-2001-0550

URL Tags
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000442
http://download.immunix.org/ImmunixOS/7.0/updates/IMNX-2001-70-036-01
http://marc.info/?l=bugtraq&m=100700363414799&w=2
http://www.caldera.com/support/security/advisories/CSSA-2001-041.0.txt Patch Vendor Advisory
http://www.cert.org/advisories/CA-2001-33.html Patch Third Party Advisory US Government Resource
http://www.debian.org/security/2001/dsa-087
http://www.kb.cert.org/vuls/id/886083 Patch Third Party Advisory US Government Resource
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-090.php3
http://www.novell.com/linux/security/advisories/2001_043_wuftpd_txt.html
http://www.redhat.com/support/errata/RHSA-2001-157.html Patch Vendor Advisory
http://www.securityfocus.com/archive/82/180823
http://www.securityfocus.com/bid/3581 Exploit Patch Vendor Advisory
http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX0107-162
https://exchange.xforce.ibmcloud.com/vulnerabilities/7611
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