CVE-2007-4473 json
Gesytec Easylon OPC Server before 2.3.44 does not properly validate server handles, which allows remote attackers to execute arbitrary code…
published 2007-12-17 18 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4456
- cvss
- 10.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.7%
- EPSS 5.7% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- kb.cert.org/vuls/id/205073 advisory
Exploit prediction
5.69% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
kb.cert.org
/vuls/id/205073
third-party-advisory, patch, us-government-resource
-
secunia.com
/advisories/28079
third-party-advisory
- neutralbit.com /en/rd/opctest/
-
osvdb.org
/42650
vdb-entry
- neutralbit.com /downloads/NB-NB-001-EXT-OPC%20Security%20Testing.pdf
-
securityfocus.com
/bid/26876
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/39062
vdb-entry
Sources
- CVE List CVE-2007-4473
- NVD CVE-2007-4473
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