Which products and versions are affected by CVE-2004-0899?

Affected: Windows Nt (Microsoft) versions 4.0, 4.0-sp1, 4.0-sp2, 4.0-sp3, 4.0-sp4, 4.0-sp5, 4.0-sp6, 4.0-sp6a. The full list is in the CVE brief.

Is CVE-2004-0899 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2004-0899 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2004-0899?

No public exploit code is known.

Is there a fix for CVE-2004-0899?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2004-0899 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2004-0899

Medium

The DHCP Server service for Microsoft Windows NT 4.0 Server and Terminal Server Edition, with DHCP logging enabled, does not properly validate the length of certain messages, which allows remote attackers to cause a denial of service (application crash) via a malformed DHCP…

Published Jan 10, 2005 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2004-0899 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Windows Nt (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 73% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

5.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS (30-day exploit likelihood)

73%

Higher than 99.4% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2004-0899 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

40 affected entries in total

Product	Affected versions	Fixed in
Windows NtMicrosoft	4.0, 4.0-sp1, 4.0-sp2, 4.0-sp3, 4.0-sp4, 4.0-sp5, 4.0-sp6, 4.0-sp6a	n/a

Timeline

Publicly disclosed
Jan 10, 2005
Last updated
Apr 15, 2026

References

FAQ

Common Questions.

The DHCP Server service for Microsoft Windows NT 4.0 Server and Terminal Server Edition, with DHCP logging enabled, does not properly validate the length of certain messages, which allows remote attackers to cause a denial of service (application crash) via a malformed DHCP message, aka "Logging Vulnerability."
Affected: Windows Nt (Microsoft) versions 4.0, 4.0-sp1, 4.0-sp2, 4.0-sp3, 4.0-sp4, 4.0-sp5, 4.0-sp6, 4.0-sp6a. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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