CVE-2011-3330

Buffer overflow in the UnitelWay Windows Device Driver, as used in Schneider Electric Unity Pro 6 and earlier, OPC Factory Server 3.34, Vijeo Citect 7.20 and earlier, Telemecanique Driver Pack 2.6 and earlier, Monitor Pro 7.6 and earlier, and PL7 Pro 4.5 and earlier, allows local users, and possibly remote attackers, to execute arbitrary code via an unspecified system parameter.

Published: 2011-11-04 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3330 is rated Moderate Risk (52.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.32%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-3330

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.47% 1.32% -0.15%
2 2026-05-06 1.13% 1.47% +0.34%
3 2025-03-19 — 1.13% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3330

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2011-3330

Affected software / configurations for CVE-2011-3330

Vendor Product Version Raw CPE
schneider-electric monitor_pro <= 7.6 cpe:2.3:a:schneider-electric:monitor_pro:*:*:*:*:*:*:*:*
schneider-electric opc_factory_server <= 3.34 cpe:2.3:a:schneider-electric:opc_factory_server:*:*:*:*:*:*:*:*
schneider-electric pl7_pro <= 4.5 cpe:2.3:a:schneider-electric:pl7_pro:*:sp5:*:*:*:*:*:*
schneider-electric telemecanique_driver_pack <= 2.6 cpe:2.3:a:schneider-electric:telemecanique_driver_pack:*:*:*:*:*:*:*:*
schneider-electric unity_pro <= 6.0 cpe:2.3:a:schneider-electric:unity_pro:*:*:*:*:*:*:*:*
schneider-electric vijeo_citect <= 7.20 cpe:2.3:a:schneider-electric:vijeo_citect:*:*:*:*:*:*:*:*

References for CVE-2011-3330

cvelogic Threat Intelligence