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CVE-2020-27540

CRITICAL
9.8
CVSS Score
Published: January 25, 2021 at 08:17 PM UTC
Updated: June 17, 2026 at 03:09 AM UTC
2 products affected across 1 vendorCs C2SHW FirmwareCs-C2Shw

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Severity
CRITICAL9.8
Exploit prediction
EPSS 0.8%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cs C2SHW Firmware· Company
95%
5.0.082.1
company-cs-c2shw (same device)
Cs-C2Shw· Companydevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://dil4rd.medium.com/groundhog-day-in-iot-valley-or-5-cves-in-1-camera-7dc1d2864707

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-347

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