The 12-hour remediation mandate for Known Exploited Vulnerabilities on internet-facing and crown-jewel systems is the hardest requirement to operationalize, and it is hard for structural reasons that cannot be fixed by effort alone. The average Indian organization’s change management process — raising a change request, convening a change advisory board, testing in staging, scheduling a maintenance window, and deploying — takes two to four weeks under normal conditions. For vendor-locked systems running Finacle, FlexCube, or legacy COBOL mainframes, the patch timeline extends to months, because the fix belongs to the vendor. CERT-In’s 12-hour window is not achievable through human-speed workflows under any realistic staffing model. Meeting it requires either autonomous patch deployment with AI-scored production safety, or patchless compensating controls — WAF rules, service disablement, network isolation — that satisfy the containment requirement without requiring a maintenance window. Both capabilities are available in the Qualys platform. Neither is available in a scan-and-ticket workflow.