{"cve":"CVE-2021-29242","nvd":{"published":"2021-05-03T14:15:07.667","modified":"2026-06-17T03:47:26.127","status":"Modified","description":"CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's addressing scheme and may re-route, add, remove or change low level communication packages.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","score":7.3},"cwes":["CWE-20"],"references":["https://customers.codesys.com/index.php","https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download=","https://www.codesys.com/security/security-reports.html","https://customers.codesys.com/index.php","https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download="],"products":["codesys:control_for_beaglebone_sl","codesys:control_for_empc-a\\/imx6_sl","codesys:control_for_iot2000_sl","codesys:control_for_linux_arm_sl","codesys:control_for_linux_sl","codesys:control_for_pfc100_sl","codesys:control_for_pfc200_sl","codesys:control_for_plcnext_sl","codesys:control_for_raspberry_pi_sl","codesys:control_for_wago_touch_panels_600_sl","codesys:control_rte","codesys:control_runtime_system_toolkit","codesys:control_win","codesys:edge_gateway","codesys:embedded_target_visu_toolkit","codesys:gateway","codesys:hmi","codesys:opc_server","codesys:plchandler","codesys:remote_target_visu_toolkit","codesys:safety_sil","codesys:simulation_runtime"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-29242","score":0.01228,"percentile":0.68877,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}