What’s Vulnerable › Vulnerabilities

CVE-1999-0077

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 31.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 1999-09-29 · updated 2026-06-16

Description

Predictable TCP sequence numbers allow spoofing.

Affected products

• Microsoft Windows Nt: 4.0

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/139
• https://exchange.xforce.ibmcloud.com/vulnerabilities/139

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