Viewerframe Mode Refresh Top High Quality -

(under Settings → Viewer tab) has an option:

: This terminology is often found in legacy web applications where an embedded content area (the viewerframe ) needs to update the main navigation or header (the top window) after an action is completed, such as a login or a setting change. viewerframe mode refresh top

Today, the specific "ViewerFrame" vulnerability is largely a relic of the past as manufacturers have implemented "secure by default" settings. However, the legacy lives on through specialized search engines like (under Settings → Viewer tab) has an option:

Historically used in "geocamming" or exploring public security cameras. Security Context: "Inurl:ViewerFrame? Mode=Refresh" Security Context: "Inurl:ViewerFrame

While modern surveillance cameras utilize RTSP, H.264, or H.265, viewerframe mode refresh was a cornerstone of early IP video.

to force the highest-level page to refresh from within a nested frame. Meta Refresh