CVE-2000-1039
CVE-2000-1039 is a medium-severity vulnerability in Microsoft Windows 95 with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 46% places it in the 99th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 46% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Windows 95
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2000-1039?
- 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.
- How severe is CVE-2000-1039?
- CVE-2000-1039 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2000-1039 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 46% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2000-1039?
- CVE-2000-1039 primarily affects Microsoft Windows 95. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2000-1039?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2000-1039 published?
- CVE-2000-1039 was published on 2001-01-09 and last updated on 2026-06-16.
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
Affected products (5)
- cpe:2.3:o:microsoft:windows_95:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_98:*:gold:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_98se:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_me:*:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*
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