Microsoft Windows Proxy Server denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Microsoft Windows (Operating System) (affected version not known). Affected by this issue is an unknown part of the component Proxy Server. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The program does not release or incorrectly releases a resource before it is made available for re-use. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The dynamic DNS update mechanism in the DNS Server service on Microsoft Windows does not properly authenticate clients in certain deployments or configurations, which allows remote attackers to change DNS records for a web proxy server and conduct man-in-the-middle (MITM) attacks on web traffic, conduct pharming attacks by poisoning DNS records, and cause a denial of service (erroneous name resolution).

The weakness was disclosed 03/22/2007 (Website). The advisory is available at This vulnerability is handled as CVE-2007-1644 since 03/23/2007. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

It is declared as functional.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (33473).






  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.2

VulDB Base Score: 9.8
VulDB Temp Score: 9.2
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


03/22/2007 🔍
03/23/2007 +1 days 🔍
03/23/2007 +0 days 🔍
03/23/2008 +366 days 🔍
03/13/2015 +2545 days 🔍
07/14/2021 +2315 days 🔍



Advisory: [404 Not Found]
Status: Not defined

CVE: CVE-2007-1644 (🔍)
X-Force: 33473 - Microsoft Windows dynamic DNS update unauthorized access
OSVDB: 43603 - Microsoft Windows DNS Server Dynamic Update Mechanism Client Authentication Bypass


Created: 03/13/2015 12:16 PM
Updated: 07/14/2021 07:40 AM
Changes: 03/13/2015 12:16 PM (50), 08/10/2018 08:09 AM (2), 07/14/2021 07:40 AM (3)
Complete: 🔍


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