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TI-2009-04208 Aliases CVE-2009-4445GHSA-vgvh-f7c3-rv4v

Microsoft Internet Information Services (IIS), when used in conjunction with unspecified…

Priority MEDIUM 41CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Microsoft Internet Information Services (IIS), when used in conjunction with unspecified third-party upload applications, allows remote attackers to create empty files with arbitrary extensions via a filename containing an initial extension followed by a : (colon) and a safe extension, as demonstrated by an upload of a .asp:.jpg file that results in creation of an empty .asp file, related to support for the NTFS Alternate Data Streams (ADS) filename syntax. NOTE: it could be argued that this is a vulnerability in the third-party product, not IIS, because the third-party product should be applying its extension restrictions to the portion of the filename before the colon.

Why it matters now

EPSS 0.12757 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:internet_information_services:*:*:*:*:*:*:*:*up to 6.0VulnerableMicrosoft
  • cpe:2.3:a:microsoft:internet_information_services:*:*:*:*:*:*:*:* Versions up to 6.0 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-4445
  2. 2026-10-03 Alias added: GHSA-vgvh-f7c3-rv4v

References

Advisory 1

  • TI-2017-04947 Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet… KEVCVSS 3.1CRITICAL 9.8
  • TI-2010-03770 Heap-based buffer overflow in the TELNET_STREAM_CONTEXT::OnSendData function in… CVSS 2.0HIGH 10.0
  • TI-2007-02725 The "hit-highlighting" functionality in webhits.dll in Microsoft Internet Information… CVSS 2.0HIGH 10.0
  • TI-2009-01456 The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows… CVSS 2.0HIGH 7.5
  • TI-2009-01064 The WebDAV extension in Microsoft Internet Information Services (IIS) 5.0 on Windows 2000… CVSS 2.0HIGH 7.5
  • TI-2005-04103 The URL parser in Microsoft Internet Information Services (IIS) 5.1 on Windows XP… CVSS 2.0HIGH 7.8
See all 90 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences