What’s Vulnerable › Vulnerabilities

CVE-1999-1463

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 16.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2001-09-12 · updated 2026-06-16

Description

Windows NT 4.0 before SP3 allows remote attackers to bypass firewall restrictions or cause a denial of service (crash) by sending improperly fragmented IP packets without the first fragment, which the TCP/IP stack incorrectly reassembles into a valid session.

Affected products

• Microsoft Windows Nt: through 4.0

References

• http://www.securityfocus.com/archive/1/7219
• https://exchange.xforce.ibmcloud.com/vulnerabilities/528
• http://www.securityfocus.com/archive/1/7219
• https://exchange.xforce.ibmcloud.com/vulnerabilities/528

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