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Unrated severityNVD Advisory· Published Jun 30, 1998· Updated Jun 16, 2026

CVE-1999-1150

CVE-1999-1150

Description

Livingston Portmaster routers running ComOS use the same initial sequence number (ISN) for TCP connections, which allows remote attackers to conduct spoofing and hijack TCP sessions.

Affected products

2
  • Livingston Portmaster/Portmaster2 versions
    cpe:2.3:h:livingston_portmaster:portmaster:initial:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:h:livingston_portmaster:portmaster:initial:*:*:*:*:*:*:*
    • (no CPE)

Patches

Vulnerability mechanics

References

2

News mentions

0

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