CVE-2009-4445 describes a vulnerability in Microsoft Internet Information Services (IIS) when integrated with certain third-party upload applications. Attackers can create empty files with arbitrary extensions by exploiting the NTFS Alternate Data Streams (ADS) filename syntax, specifically by appending ":.safe_extension" to a desired file extension (e.g., ".asp:.jpg" creating an empty ".asp" file). This medium-severity vulnerability (CVSS 6.0) requires authentication and moderate attack complexity, potentially leading to partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 6.0CPE matchmatch criteria | cpe:2.3:a:microsoft:internet_information_services:*:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:M/Au:S/C:P/I:P/A:P
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.