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Vulnerability record · CVE-2007-4473 · published 17 December 2007

CVE-2007-4473: Gesytec easylon opc server memory buffer overflow vulnerability

GGesytec Easylon · Opc Server

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.

10.0 CVSS 2.0 High EPSS 5.7% · top 7.3% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
5.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/42650
http://secunia.com/advisories/28079
http://www.kb.cert.org/vuls/id/205073 PatchUS Government Resource
http://www.neutralbit.com/downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf
http://www.neutralbit.com/en/rd/opctest/
http://www.securityfocus.com/bid/26876
https://exchange.xforce.ibmcloud.com/vulnerabilities/39062
http://osvdb.org/42650
http://secunia.com/advisories/28079
http://www.kb.cert.org/vuls/id/205073 PatchUS Government Resource
http://www.neutralbit.com/downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf
http://www.neutralbit.com/en/rd/opctest/
http://www.securityfocus.com/bid/26876
https://exchange.xforce.ibmcloud.com/vulnerabilities/39062

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Source: NIST National Vulnerability Database (record CVE-2007-4473), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.