CVE-2007-4473
CVE-2007-4473 is a critical-severity vulnerability in Gesytec Easylon Opc Server with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 2.0 base score 10.0)
- EPSS exploit prediction: 6% (92nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Gesytec Easylon Opc Server
- Published:
- Last 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.
Frequently asked questions
- What is CVE-2007-4473?
- 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.
- How severe is CVE-2007-4473?
- CVE-2007-4473 has a CVSS 2.0 base score of 10.0, rated critical severity.
- Is CVE-2007-4473 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-4473?
- CVE-2007-4473 affects Gesytec Easylon Opc Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2007-4473?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2007-4473 published?
- CVE-2007-4473 was published on 2007-12-17 and last updated on 2026-06-16.
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
Affected products (1)
- cpe:2.3:a:gesytec_easylon:opc_server:2.30.32:*:*:*:*:*:*:*
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