CVE-2010-4579: Opera before 11.00 does not properly constrain dialogs to appear on top of rendered documents, which makes...

Security readout for executives and security teams

This flaw affected Opera browsers before 11.00. A malicious website could make browser dialogs appear misleading, increasing the chance that a user trusts fake security information or a deceptive download prompt. The impact is primarily social engineering through browser UI spoofing, not direct system takeover from the evidence provided. Exposure is most likely limited to legacy systems still running Opera versions before 11.00 on supported desktop platforms from that era, including Windows, Mac, Unix, or distribution packages. Treat this as a legacy-browser hygiene issue. It is unlikely to drive emergency response in modern environments, but any remaining pre-11.00 Opera usage creates avoidable phishing and unsafe-download risk. Mitigation focus: Upgrade or remove Opera versions before 11.00 wherever still present.; Check Opera and distribution advisories for platform-specific package guidance.; Restrict internet access from legacy browsers until they can be retired..

Prepared

Jun 28, 2026, 01:17 UTC (UTC+00:00)

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