High 8.8Published Jan 21, 2026

CVE-2021-47770OpenPLC 3 - Remote Code Execution

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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It affects Autonomy OpenPLC. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Autonomy OpenPLC

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Autonomy OpenPLC autonomy:openplc (from the name)	OpenPLC v3	CNA record

References

References

https://www.exploit-db.com/exploits/49803	exploit
https://www.openplcproject.com/	product
https://github.com/thiagoralves/OpenPLC_v3	product
https://www.vulncheck.com/advisories/openplc-remote-code-execution	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.