AUGUST 4, 2026
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Case File

CVE-2020-27540

CRITICAL · CVSS 9.8 EPSS 0.83%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-26 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2020-27540
Severity
CRITICAL
CVSS
9.8
EPSS
0.83%

Original NVD Description

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.

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