CVE-2007-1531: Microsoft Windows Vista

Medium severity, CVSS 5.0. EPSS: 22.8% chance of exploitation in the next 30 days.

Microsoft Windows XP and Vista overwrites ARP table entries included in gratuitous ARP, which allows remote attackers to cause a denial of service (loss of network access) by sending a gratuitous ARP for the address of the Vista host.

Affected products

• Microsoft Windows Vista: any version
• Microsoft Windows XP: any version

Published 2007-03-20. Last modified 2026-06-16.