Is CVE-2007-1644 being actively exploited?

CVE-2007-1644 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-1644?

CVE-2007-1644 has a CVSS 2.0 base score of 10.0 (HIGH).

CVE-2007-1644

HIGH · CVSS 10.0EPSS 34.0%EU EUVD

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).

Key facts

CVSS score: 10.0 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS score: 34.0% (98th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-1638)
Published: March 24, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-1638 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

microsoft / all windows

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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