CVE-2007-4473

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-12-17 · updated 2026-06-16
Weakness: CWE-119

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.

Affected products

Gesytec Easylon Opc Server: 2.30.32

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/
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
http://www.neutralbit.com/downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf
http://www.neutralbit.com/en/rd/opctest/

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