Which products and versions are affected by CVE-2003-0349?

Affected: Windows 2000 (Microsoft). The full list is in the CVE brief.

Is CVE-2003-0349 being exploited in the wild?

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

Is CVE-2003-0349 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-2003-0349?

Public exploit code is available.

Is there a fix for CVE-2003-0349?

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

How urgently should CVE-2003-0349 be patched?

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

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Vulnerability Intelligence

CVE-2003-0349

HighPublic exploit

Buffer overflow in the streaming media component for logging multicast requests in the ISAPI for the logging capability of Microsoft Windows Media Services (nsiislog.dll), as installed in IIS 5.0, allows remote attackers to execute arbitrary code via a large POST request to…

Published Jul 24, 2003 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2003-0349 is a high-severity vulnerability (CVSS 7.5 v2) affecting Windows 2000 (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 80% 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

7.5

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

EPSS (30-day exploit likelihood)

80%

Higher than 99.6% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2003-0349 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

1 affected entries in total

Product	Affected versions	Fixed in
Windows 2000Microsoft	See advisory	n/a

Timeline

Publicly disclosed
Jul 24, 2003
Last updated
Apr 15, 2026

References

patch20030626 Windows Media Services Remote Command Execution #2
exploitMSF ms03_022_nsiislog_post.rb
exploitExploitDB-16355
exploitExploitDB-22837
exploitExploitDB-48

6 more references in the full CVE brief

FAQ

Common Questions.

Buffer overflow in the streaming media component for logging multicast requests in the ISAPI for the logging capability of Microsoft Windows Media Services (nsiislog.dll), as installed in IIS 5.0, allows remote attackers to execute arbitrary code via a large POST request to nsiislog.dll.
Affected: Windows 2000 (Microsoft). 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.
Public exploit code is available.
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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