Read the docs
TI-2021-22386 Aliases CVE-2021-47770GHSA-grvf-xrw5-jxhc

OpenPLC 3 - Remote Code Execution

Priority HIGH 72CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00753 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AutonomyOpenPLCOpenPLC v3—No fix listedCNA
  • OpenPLC VendorAutonomy Affected OpenPLC v3 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47770
  2. 2026-10-03 Alias added: GHSA-grvf-xrw5-jxhc

References

Exploit 1

Other 2

  • TI-2007-05648 Multiple stack-based buffer overflows in Autonomy (formerly Verity) KeyView Viewer… CVSS 2.0HIGH 9.3
  • TI-2005-02482 Multiple stack-based buffer overflows in Autonomy (formerly Verity) KeyView SDK before… CVSS 2.0HIGH 9.3
  • TI-2011-01331 Heap-based buffer overflow in xlssr.dll in Autonomy KeyView, as used in IBM Lotus Notes… CVSS 2.0HIGH 9.3
  • TI-2008-04353 Stack-based buffer overflow in wp6sr.dll in the Autonomy KeyView SDK 10.4 and earlier, as… CVSS 2.0HIGH 9.3
  • TI-2007-05649 Stack-based buffer overflow in Autonomy (formerly Verity) KeyView Viewer, Filter, and… CVSS 2.0HIGH 9.3
  • TI-2009-02893 Buffer overflow in xlssr.dll in the Autonomy KeyView XLS viewer (aka File Viewer for… CVSS 2.0HIGH 9.3
See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences