CVE-2017-2856: Foscam c1 Firmware

High severity, CVSS 8.1. EPSS: 1.7% chance of exploitation in the next 30 days.

An exploitable buffer overflow vulnerability exists in the DDNS client used by the Foscam C1 Indoor HD Camera running application firmware 2.52.2.43. On devices with DDNS enabled, an attacker who is able to intercept HTTP connections will be able to fully compromise the device by creating a rogue HTTP server.

Affected products

• Foscam c1 Firmware: version 2.52.2.43 only

Published 2018-09-17. Last modified 2026-06-17.