CVE-2021-47770
HIGH EPSS 45.8%
Published Jan 21, 20265mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
Published Jan 21, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
45.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-94 Improper Control of Generation of Code (Code Injection) Injection
References 4
- github.com https://github.com/thiagoralves/OpenPLC_v3
- exploit-db.com https://www.exploit-db.com/exploits/49803
- openplcproject.com https://www.openplcproject.com/
- vulncheck.com https://www.vulncheck.com/advisories/openplc-remote-code-execution
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.