The web service on Epson WorkForce WF-2861 10.48 LQ22I3(Recovery-mode), WF-2861 10.51.LQ20I6, and WF-2861 10.52.LQ17IA devices allows remote attackers to upload a firmware file and reset the printer without authentication by making a request to the /DOWN/FIRMWAREUPDATE/ROM1 URI and a POST request to the /FIRMWAREUPDATE URI.

The web service on Epson WorkForce WF-2861 10.48 LQ22I3(Recovery-mode), WF-2861 10.51.LQ20I6, and WF-2861 10.52.LQ17IA devices allows remote attackers to cause a denial of service via a FIRMWAREUPDATE GET request, as demonstrated by the /DOWN/FIRMWAREUPDATE/ROM1 URI.

An issue was discovered on Epson WorkForce WF-2861 10.48 LQ22I3, 10.51.LQ20I6 and 10.52.LQ17IA devices. They use SNMP to find certain devices on the network, but the default version is v2c, allowing an amplification attack.

An issue was discovered on Epson WorkForce WF-2861 10.48 LQ22I3, 10.51.LQ20I6 and 10.52.LQ17IA devices. On the 'Air Print Setting' web page, if the data for 'Bonjour Service Location' at /PRESENTATION/BONJOUR is more than 251 bytes when sending data for Air Print Setting, then the device no longer functions until a reboot.