What’s Vulnerable › Vulnerabilities

CVE-2021-31630

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 27.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-03 · updated 2026-06-17
• Weakness: CWE-94

Description

Command Injection in Open PLC Webserver v3 allows remote attackers to execute arbitrary code via the "Hardware Layer Code Box" component on the "/hardware" page of the application.

Affected products

• OpenPLC_v3: all versions

References

• https://packetstormsecurity.com/files/162563/OpenPLC-WebServer-3-Remote-Code-Execution.html
• https://www.youtube.com/watch?v=l08DHB08Gow
• https://packetstormsecurity.com/files/162563/OpenPLC-WebServer-3-Remote-Code-Execution.html
• https://www.youtube.com/watch?v=l08DHB08Gow

Get alerted when CVE-2021-31630 or the next vulnerability affects your stack