CVE-2004-0459: Ieee 802.11 Wireless Protocol

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

The Clear Channel Assessment (CCA) algorithm in the IEEE 802.11 wireless protocol, when using DSSS transmission encoding, allows remote attackers to cause a denial of service via a certain RF signal that causes a channel to appear busy (aka "jabber"), which prevents devices from transmitting data.

Affected products

• Ieee 802.11 Wireless Protocol: any version

Published 2004-07-07. Last modified 2026-06-16.