CVE-2009-2521
EXPLOITED RANSOMWAREMicrosoft IIS 5.0-7.0 - DoS
Title source: llmDescription
Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka "IIS FTP Service DoS Vulnerability."
Exploits (3)
metasploit
WORKING POC
by Kingcope, Myo Soe · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/windows/ftp/iis_list_exhaustion.rb
exploitdb
WORKING POC
VERIFIED
by kingcope · textdoswindows
https://www.exploit-db.com/exploits/9587
References (5)
Scores
EPSS
0.6078
EPSS Percentile
98.3%
Exploitation Intel
VulnCheck KEV
2023-02-14
Ransomware Use
Confirmed
Classification
CWE
CWE-400
Status
draft
Affected Products (1)
microsoft/internet_information_services
< 7.0
Timeline
Published
Sep 04, 2009
Tracked Since
Feb 18, 2026