CVE-2012-1003: Multiple integer overflows in Opera 11.60 and earlier allow remote attackers to cause a denial of service (...

Security readout for executives and security teams

This is an old Opera browser crash issue. A malicious page could pass very large values to certain JavaScript typed-array or ArrayBuffer functions and crash Opera 11.60 or earlier. Sources do not show code execution, data theft, or active exploitation; the vendor reportedly called it a stability issue, not a security issue. Exposure is limited to users running Opera 11.60 or earlier and browsing attacker-controlled or compromised pages. Modern supported browsers are not identified as affected in the provided sources. Organizations with unmanaged legacy desktops, kiosks, or archived test systems should verify whether old Opera builds remain installed. Low priority unless legacy Opera is still present in the environment. The likely business impact is user disruption from browser crashes, not confirmed compromise. Address through legacy software cleanup and exception tracking rather than emergency response. Mitigation focus: Inventory endpoints for Opera 11.60 or earlier installations.; Remove unsupported Opera builds where business use is not required.; Check vendor guidance for any fixed or recommended replacement version..

Prepared

Jun 27, 2026, 17:28 UTC (UTC+00:00)

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