CVE-2006-1067: Linksys WRT54G routers version 5 (running VXWorks) allow remote attackers to cause a denial of service by s...

Security readout for executives and security teams

CVE-2006-1067 describes a remote denial-of-service issue in Linksys WRT54G version 5 routers running VXWorks. A malformed IRC DCC SEND message can reset an IRC connection through the router. Business impact is most relevant where legacy routers still handle internet access or IRC traffic. Exposure is likely limited to networks still using Linksys WRT54G version 5 devices running VXWorks, especially where IRC traffic traverses NAT. Because this is a 2006 consumer-router issue, modern enterprise exposure is usually legacy or unmanaged equipment. Treat this as a legacy-asset risk rather than an emergency unless affected routers are still in production. Priority should be asset discovery, replacement planning, and limiting unnecessary IRC traffic. Mitigation focus: Inventory and replace any Linksys WRT54G v5 VXWorks routers still in use.; Check archived Linksys or Cisco guidance for firmware or replacement recommendations.; Restrict IRC traffic where it is not required for business operations..

Prepared

Jun 29, 2026, 14:02 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.