CVE-1999-0909

High CVSS 7.5

Published 1999-09-20 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-0909, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Multihomed Windows systems allow a remote attacker to bypass IP source routing restrictions via a malformed packet with IP options, aka the "Spoofed Route Pointer" vulnerability.

Sources

NVD record for CVE-1999-0909

CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:P