This vulnerability allows network-adjacent attackers to create arbitrary files on affected installations of Cisco RV16x and RV26x routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 443 by default. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create files in the context of root.
Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File Write Vulnerabilities
Cisco Small Business RV Series Routers Multiple Vulnerabilities (cisco-sa-rv160-260-filewrite-7x9mnKjn)