What’s Vulnerable › Vulnerabilities

CVE-2000-1039

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 45.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2000-12-19 · updated 2026-06-16

Description

Various TCP/IP stacks and network applications allow remote attackers to cause a denial of service by flooding a target host with TCP connection attempts and completing the TCP/IP handshake without maintaining the connection state on the attacker host, aka the "NAPTHA" class of vulnerabilities. NOTE: this candidate may change significantly as the security community discusses the technical nature of NAPTHA and learns more about the affected applications. This candidate is at a higher level of abstraction than is typical for CVE.

Affected products

• Microsoft Windows 95: all versions
• Microsoft Windows 98: all versions
• Microsoft Windows 98Se: all versions
• Microsoft Windows Me: all versions
• Microsoft Windows Nt: 4.0

References

• http://archives.neohapsis.com/archives/win2ksecadvice/2000-q4/0105.html
• http://razor.bindview.com/publish/advisories/adv_NAPTHA.html
• http://www.cert.org/advisories/CA-2000-21.html
• http://www.securityfocus.com/bid/2022
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-091
• http://archives.neohapsis.com/archives/win2ksecadvice/2000-q4/0105.html
• http://razor.bindview.com/publish/advisories/adv_NAPTHA.html
• http://www.cert.org/advisories/CA-2000-21.html
• http://www.securityfocus.com/bid/2022
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-091

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