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Vulnerabilities CVE-2021-47770

CVE-2021-47770

High
Open
TLP:CLEAR

OpenPLC 3 - Remote Code Execution

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Description

OpenPLC v3 contains an authenticated remote code execution vulnerability that allows attackers with valid credentials to inject malicious code through the hardware configuration interface. Attackers can upload a custom hardware layer with embedded reverse shell code that establishes a network connection to a specified IP and port, enabling remote command execution.

Details

CVSS Score
8.6
EPSS Score
0.63%

47.3th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Jan 21, 2026
Last Modified
Aug 14, 2026
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