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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 27.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 27.07% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- openplcproject/openplc v3 firmware
- Source
- cve@mitre.org
EPSS 27.1% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.