{"cve":"CVE-2007-4473","nvd":{"published":"2007-12-17T21:46:00.000","modified":"2026-06-16T22:44:09.850","status":"Modified","description":"Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary code or cause a denial of service via unspecified network traffic to the OLE for Process Control (OPC) interface, probably related to free operations on arbitrary memory addresses through certain Remove functions, and read and write operations on arbitrary memory addresses through certain Set, Read, and Write functions.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://osvdb.org/42650","http://secunia.com/advisories/28079","http://www.kb.cert.org/vuls/id/205073","http://www.neutralbit.com/downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf","http://www.neutralbit.com/en/rd/opctest/"],"products":["gesytec_easylon:opc_server"],"source":"nvd","synced_at":"2026-10-19T19:49:50.107194424+00:00"},"epss":{"cve":"CVE-2007-4473","score":0.05689,"percentile":0.92999,"date":"2026-10-31"},"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."]}