What’s Vulnerable › Vulnerabilities

CVE-2009-1923

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 24.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-08-12 · updated 2026-06-16
• Weakness: CWE-119

Description

Heap-based buffer overflow in the Windows Internet Name Service (WINS) component for Microsoft Windows 2000 SP4 and Server 2003 SP2 allows remote attackers to execute arbitrary code via a crafted WINS replication packet that triggers an incorrect buffer-length calculation, aka "WINS Heap Overflow Vulnerability."

Affected products

• Microsoft Windows 2000: all versions
• Microsoft Windows 2003 Server: all versions

References

• http://www.us-cert.gov/cas/techalerts/TA09-223A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-039
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6410
• http://www.us-cert.gov/cas/techalerts/TA09-223A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-039
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6410

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