How severe is CVE-2007-1644?

CVE-2007-1644 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2007-1644 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1644?

CVE-2007-1644 affects Microsoft All Windows. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-1644?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-1644 published?

CVE-2007-1644 was published on 2007-03-24 and last updated on 2026-06-16.

CVE-2007-1644

CVE-2007-1644 is a critical-severity vulnerability in Microsoft All Windows with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 33% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 33% (98th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft All Windows
Published: 2007-03-24
Last modified: 2026-06-16

Description

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).

Frequently asked questions

What is CVE-2007-1644?: 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).
How severe is CVE-2007-1644?: CVE-2007-1644 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2007-1644 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1644?: CVE-2007-1644 affects Microsoft All Windows. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-1644?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2007-1644 published?: CVE-2007-1644 was published on 2007-03-24 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:microsoft:all_windows:abstract_cpe:*:*:*:*:*:*:*

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