CVE-2000-0809: Buffer overflow in Getkey in the protocol checker in the inter-module communication mechanism in Check Poin...

Security readout for executives and security teams

A flaw in older Check Point VPN-1/FireWall-1 4.1 and earlier let a remote attacker send oversized input to the "Getkey" component and crash the firewall's inter-module communication, causing a denial of service. This is a legacy issue from 2000 affecting long-obsolete firewall versions; modern, supported Check Point releases are not in scope. Business impact is limited to organizations still operating unsupported firewall appliances. Exposure is limited to environments still running Check Point VPN-1/FireWall-1 4.1 or earlier with the inter-module communication ports reachable from untrusted networks. These versions have been end-of-life for many years, so real-world exposure in 2026 is minimal outside legacy or isolated deployments. Low priority in 2026. Only material if the organization still operates end-of-life Check Point VPN-1/FireWall-1 4.1 hardware; in that case the priority becomes replacing the unsupported platform, not patching this single DoS bug. Mitigation focus: Upgrade off Check Point VPN-1/FireWall-1 4.1 to a currently supported Check Point release.; Consult Check Point's advisory and support portal for the Getkey buffer fix or successor guidance.; Restrict access to firewall management and inter-module communication ports to trusted management networks only..

Prepared

Jul 12, 2026, 00:03 UTC (UTC+00:00)

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