Adobe Document Server for Reader Extensions 6.0 allows remote authenticated users to inject arbitrary web script via a leading (1) ftp or (2) http URI in the ReaderURL variable in the "Update Download Site" section of ads-readerext. NOTE: it is not clear whether the vendor advisory addresses this issue. In addition, since the issue requires administrative privileges to exploit, it is not clear whether this crosses security boundaries.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.014
EPSS Ranking 79.3%