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CVE-2021-47770

HIGH

8.8

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.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/21/2026

Last Modified1/26/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-94

References

https://github.com/thiagoralves/OpenPLC_v3(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/49803(disclosure@vulncheck.com)

https://www.openplcproject.com/(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openplc-remote-code-execution(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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