CVE-2001-0543

Name: CVE-2001-0543
Creator: NVD / NIST
Published: 2001-09-20T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 18.00%

Last modified Jun 16, 2026

CVE-2001-0543 is a vulnerability of currently unknown severity. Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.. EPSS estimates a 18.00% chance of exploitation in the next 30 days.

Description

Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.

Metrics

EPSS Probability

18.00%

96.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-401

Affected Software

Vendor	Product	Versions
Microsoft	Exchange Server	2000
Microsoft	Windows 2000	All versions
Microsoft	Windows Nt	4.0

References

http://www.securityfocus.com/bid/3183Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-043Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6977Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A334Third Party Advisory
http://www.securityfocus.com/bid/3183Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-043Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6977Third Party Advisory, VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A334Third Party Advisory

Timeline

Published: Sep 20, 2001
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2001-0543?

Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.

How severe is CVE-2001-0543?

Severity scoring for CVE-2001-0543 is pending analysis. The EPSS model estimates a 18.00% probability of exploitation in the next 30 days.

How do I fix CVE-2001-0543?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2001-0543?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST