CVE-2004-0478: Unknown versions of Mozilla allow remote attackers to cause a denial of service (high CPU/RAM consumption)...

Security readout for executives and security teams

This is an old Mozilla browser denial-of-service issue. A malicious web page could make the browser consume excessive CPU and memory, disrupting the user session. The source bundle does not identify exact Mozilla versions, severity scoring, or a confirmed fix. Exposure is likely limited to legacy Mozilla browser deployments or archived environments using affected, unspecified builds. Modern supported browsers should be verified through vendor guidance rather than assumed affected. Low immediate priority unless legacy Mozilla remains in production or regulated workflows. Prioritize confirming whether the browser still exists in the environment before allocating remediation effort. Mitigation focus: Inventory legacy Mozilla browser use across endpoints and lab systems.; Check Mozilla Bugzilla 243540 and vendor guidance for affected and fixed versions.; Upgrade, replace, or retire unsupported Mozilla builds where found..

Prepared

Jun 30, 2026, 05:56 UTC (UTC+00:00)

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