CVE-2021-36260

CVE-2021-36260 is a command injection flaw (CWE-78) in the web server embedded in a wide range of Hikvision security camera and related devices, caused by insufficient input validation. An attacker triggers it by sending a crafted HTTP request to the device's web management interface, allowing commands to be executed on the device without authentication. Successful exploitation grants unauthenticated remote code execution on the camera or recorder, letting an attacker take control of the device, pivot into the surrounding network, or use the devices as a botnet platform. Any Hikvision device running the affected web server firmware is at risk, which includes cameras, recorders, and other surveillance hardware deployed in homes, businesses, and government facilities. Exploitation is confirmed in the wild: the flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2022-01-10 and carries a 99.9% EPSS probability of exploitation within 30 days, while no public proof-of-concept code is cataloged in the provided data and no CVSS score has been issued yet.

What to do: Apply firmware updates issued by Hikvision per the vendor's instructions, as required by CISA's KEV listing for this vulnerability. Restrict the device web management interface to trusted networks or VPN access and avoid direct internet exposure. Review web server logs for anomalous HTTP requests to the device interface and signs of command execution, and prioritize internet-facing devices for patching first.