CVE-2011-3142

Exp

Stack-based buffer overflow in an ActiveX control in KVWebSvr.dll in WellinTech KingView 6.52 and 6.53 allows remote attackers to execute arbitrary code via a long second argument to the ValidateUser method.

Published: 2011-08-16 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3142 is rated High Exploit Risk (88.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 32.35%, 97th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2011-3142

EDB-ID Source Kind Published Link
16936 exploit_db edb 2011-03-07 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-3142

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 2026-04-25 33.20% 32.35% -0.85%
2 2026-02-19 29.33% 33.20% +3.87%
3 2025-12-03 — 29.33% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3142

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2011-3142

Affected software / configurations for CVE-2011-3142

Vendor Product Version Raw CPE
wellintech kingview 6.52 cpe:2.3:a:wellintech:kingview:6.52:*:*:*:*:*:*:*
wellintech kingview 6.53 cpe:2.3:a:wellintech:kingview:6.53:*:*:*:*:*:*:*

References for CVE-2011-3142

cvelogic Threat Intelligence