CVE-2021-31630
HIGHCVSS 8.8/10EPSS 27.07%
Last modified
CVE-2021-31630 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 27.07% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openplcproject | Openplc V3 Firmware | All versions |
References
- https://packetstormsecurity.com/files/162563/OpenPLC-WebServer-3-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://www.youtube.com/watch?v=l08DHB08GowExploit, Third Party Advisory
- https://packetstormsecurity.com/files/162563/OpenPLC-WebServer-3-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://www.youtube.com/watch?v=l08DHB08GowExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-31630?
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.
How severe is CVE-2021-31630?
CVE-2021-31630 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 27.07% probability of exploitation in the next 30 days.
How do I fix CVE-2021-31630?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-31630?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST