Foscam · Foscam Camera Fi9805E · CVE-2021-43517
**Name of the Vulnerable Software and Affected Versions**
FOSCAM Camera FI9805E version V4.02.R12.00018510.10012.143900.00000
**Description**
The issue concerns a backdoor in the FOSCAM Camera FI9805E. This backdoor opens the Telnet port when a special command is sent on port 9530.
**Recommendations**
For FOSCAM Camera FI9805E version V4.02.R12.00018510.10012.143900.00000, consider restricting access to port 9530 to minimize the risk of exploitation. As a temporary workaround, avoid using the special command that triggers the backdoor until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.