HIGH · 7.5

CVE-1999-1150

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.

Vulnerability 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.

CVSS Score

7.5

HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P
Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
PARTIAL

Affected Products

VendorProductVersions
Livingston PortmasterPortmasterinitial

References

FAQ

What is CVE-1999-1150?

CVE-1999-1150 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

How severe is CVE-1999-1150?

CVE-1999-1150 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-1999-1150?

Check the references section above for vendor advisories and patch information. Affected products include: Livingston Portmaster Portmaster.