CVE-2004-0537: Opera 7.50 and earlier allows remote web sites to provide a "Shortcut Icon" (favicon) that is wider than ex...

Security readout for executives and security teams

This is a browser user-interface spoofing issue in Opera 7.50 and earlier. A malicious website could use an unusually wide favicon and spacing to make the browser appear to show a trusted domain, increasing phishing risk. It is not described as code execution or system compromise in the supplied sources. Exposure is limited to users running Opera 7.50 or earlier, a legacy browser line from 2004. Modern enterprise exposure should be uncommon, but any unmanaged legacy workstation, kiosk, lab system, or archived desktop image using that browser could remain affected. Low priority unless legacy Opera is still present. The business risk is phishing deception against affected users, not direct server exposure. Confirm absence of Opera 7.50 or earlier; if found, remove or replace it because the software is long unsupported. Mitigation focus: Inventory endpoints for Opera 7.50 or earlier.; Retire the legacy browser or upgrade to a supported browser.; Check Opera 7.51 vendor changelog and historical guidance..

Prepared

Jun 30, 2026, 05:41 UTC (UTC+00:00)

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