CVE-2020-27540: Company Cs-c2shw Firmware

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Bash injection vulnerability and bypass of signature verification in Rostelecom CS-C2SHW 5.0.082.1. The camera reads firmware update configuration from SD card file vc\version.json. fw-sign parameter and from this configuration is directly inserted into a bash command. Firmware update is run automatically if there is special file on the inserted SD card.

Affected products

• Company Cs-c2shw Firmware: version 5.0.082.1 only

Published 2021-01-26. Last modified 2026-06-17.