CVE-2009-2523

Name: CVE-2009-2523
Creator: NVD / NIST
Published: 2009-11-11T19:30:00.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 26.46%

Last modified Jun 16, 2026

CVE-2009-2523 is a vulnerability of currently unknown severity. The License Logging Server (llssrv.exe) in Microsoft Windows 2000 SP4 allows remote attackers to execute arbitrary code via an RPC message containing a string without a null terminator, which triggers a heap-based buffer overflow in the LlsrLicenseRequestW method, aka "License Logging Server Heap Overflow Vulnerability.". EPSS estimates a 26.46% chance of exploitation in the next 30 days.

Description

The License Logging Server (llssrv.exe) in Microsoft Windows 2000 SP4 allows remote attackers to execute arbitrary code via an RPC message containing a string without a null terminator, which triggers a heap-based buffer overflow in the LlsrLicenseRequestW method, aka "License Logging Server Heap Overflow Vulnerability."

Metrics

EPSS Probability

26.46%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 2000	All versions	Sp4

References

http://www.us-cert.gov/cas/techalerts/TA09-314A.htmlThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-064Mitigation, Patch, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6300Broken Link
http://www.us-cert.gov/cas/techalerts/TA09-314A.htmlThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-064Mitigation, Patch, Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6300Broken Link

Timeline

Published: Nov 11, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2523?

How severe is CVE-2009-2523?

Severity scoring for CVE-2009-2523 is pending analysis. The EPSS model estimates a 26.46% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2523?

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-2009-2523?

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

Scan your code now

Source: NVD / NIST