VendorsOpenPLC Projectopenplc_v3any version
Vulnerabilities

OpenPLC Project OpenPLC v3 any version

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

7CVEs
CVE-2018-20818
A buffer overflow vulnerability was discovered in the OpenPLC controller, in the OpenPLC_v2 and OpenPLC_v3 versions. It occurs in the modbus.cpp mapUnusedIO() function, which can cause a runtime crash of the PLC or possibly have unspecified other impact.
Published 2019-04-21 · Modified
9.8EPSS 0.015
CVE-2026-28205
Initialization of a resource with an insecure default in OpenPLC_V3
Published 2026-04-09 · Analyzed
9.8EPSS 0.007
CVE-2026-35556
Plaintext storage of a password in OpenPLC_V3
Published 2026-04-09 · Analyzed
9.2EPSS 0.004
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.
Published 2021-08-03 · Modified
9.0EPSS 0.271
CVE-2026-35063
Missing Authorization in OpenPLC_V3
Published 2026-04-09 · Analyzed
8.8EPSS 0.004
CVE-2026-31156
A path injection vulnerability exists in OpenPLC v3 (2c82b0e79c53f8c1f1458eee15fec173400d6e1a) as the binary program compiled from glue_generator.cpp does not perform any validation on the file path parameters passed via the command line. The user-controlled input parameters are directly passed to the underlying file operation functions (fopen/ifstream/ofstream) for file reading and writing. An attacker can exploit this vulnerability by constructing a malicious path to read arbitrary readable files.
Published 2026-05-13 · Modified
6.5EPSS 0.005
CVE-2024-37741
OpenPLC 3 through 9cd8f1b allows XSS via an SVG document as a profile picture.
Published 2024-06-28 · Modified
5.4EPSS 0.003