A remote file download issue can occur in some capabilities of Esri ArcGIS Server web services that may in some edge cases allow a remote, unauthenticated attacker to induce an unsuspecting victim to launch a process in the victim's PATH environment. Current browsers provide users with warnings against running unsigned executables downloaded from the internet.

A cross site scripting vulnerability exists in some map service configurations of ArcGIS Server versions 10.8.1 and 10.7.1. Specifically crafted web requests can execute arbitrary JavaScript in the context of the victim's browser.

A stored Cross Site Scripting (XSS) vulnerability in Esri ArcGIS Server feature services versions 10.8.1 and 10.9 (only) feature services may allow a remote, unauthenticated attacker to pass and store malicious strings via crafted queries which when accessed could potentially execute arbitrary JavaScript code in the user’s browser.