CVE-2011-4534

ZenSysSrv.exe in Ing. Punzenberger COPA-DATA zenon 6.51 SP0 allows remote attackers to cause a denial of service (service crash) or possibly execute arbitrary code via a series of connections and disconnections on TCP port 1101, aka Reference Number 25212.

Published: 2012-02-10 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4534 is rated Moderate Risk (57.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.43%). 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-2011-4534

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 2025-03-30 1.74% 1.43% -0.32%
2 2025-03-29 1.43% 1.74% +0.32%
3 2025-03-17 — 1.43% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4534

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2011-4534

Affected software / configurations for CVE-2011-4534

Vendor Product Version Raw CPE
copadata zenon 6.51 cpe:2.3:a:copadata:zenon:6.51:sp0:*:*:*:*:*:*

References for CVE-2011-4534

cvelogic Threat Intelligence