CVE-2011-3142

highpriority · attend · 63EPSS 0.384 · 99 %ileexploit · functionalEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

38.4% (99th) EPSS

CVSS 10 · high

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationWellinTech KingViewcisa_csaf_ot
WellinTech recommends that users of affected versions of WellinTech KingView replace the vulnerable KVWebSrv.dll with the updated file. The updated KVWebSrv.dll file is available from (http://download.kingview.com/software/kingview%20Chinese%20Version/KVWebSvr.rar). Replace the original KVWebSrv.dll file with the updated file. By default, KVWebSrv.dll is located in the “c:\Program Files\Kingview\” directory.
http://download.kingview.com/software/kingview%20Chinese%20Version/KVWebSvr.rar

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-16936KingView 6.5.3 SCADA - ActiveXfunctional · exploit_db

affected products (5)

Products and version ranges known to be affected.

WellinTech WellinTech KingView: V6.53all versionscisa_csaf_otUS
WellinTech WellinTech KingViewall versionscisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
wellintech kingview= 6.52nvdUScpe:2.3:a:wellintech:kingview:*:*:*:*:*:*:*:*
wellintech kingview= 6.53nvdUScpe:2.3:a:wellintech:kingview:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-11-074-01WellinTech KingView 6.53 KVWebSvr ActiveX2011-12-16icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2011-08-16modified 2026-06-16

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+21038 more

references (24)

External citations — patches, advisories, analysis.

scry

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