CVE-2021-47770

8.8 HIGH
Published: January 21, 2026 Modified: January 26, 2026
View on NVD

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/thiagoralves/OpenPLC_v3
Source: disclosure@vulncheck.com
https://www.exploit-db.com/exploits/49803
Source: disclosure@vulncheck.com
https://www.openplcproject.com/
Source: disclosure@vulncheck.com

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.8 / 10.0
EPSS (Exploit Probability)
0.3%
52th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)