CVE-2011-0342
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMultiple buffer overflows in the InduSoft ISSymbol ActiveX control in ISSymbol.ocx 301.1104.601.0 in InduSoft Web Studio 7.0B2 hotfix 7.0.01.04 allow remote attackers to execute arbitrary code via a long parameter to the (1) Open, (2) Close, or (3) SetCurrentLanguage method.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceBuffer overflow vulnerability in InduSoft ISSymbol ActiveX control (ISSymbol.ocx) allows remote code execution via specially crafted long parameters to the Open, Close, or SetCurrentLanguage methods.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 7.0b2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify InduSoft Web Studio installation and versionCheck for InduSoft Web Studio installation directory (typically in Program Files) and locate version information in product documentation, about dialog, or version file within the installation folderAffected if The installed version is exactly 7.0b2
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Locate ISSymbol.ocx fileSearch for ISSymbol.ocx in the InduSoft installation directory (commonly in bin or system folder) or system-wide using file searchAffected if ISSymbol.ocx file exists on the system
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Verify ActiveX control registrationCheck Windows registry for ISSymbol.ocx registration under HKLM\SOFTWARE\Microsoft\Code Store Database\SOFTWARE\Classes\CLSID or use 'regsvr32 /u ISSymbol.ocx' to test if registered (will fail if not registered)Affected if The ActiveX control is registered in Windows registry
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Check if ISSymbol ActiveX is enabled in Internet ExplorerOpen Internet Explorer, go to Tools > Internet Options > Security > Custom Level > ActiveX controls and plugins, or check for the CLSID of ISSymbol in registry under IE's ActiveX permitted listAffected if The ActiveX control is allowed to run in Internet Explorer (not disabled in IE security settings)
A system is affected if InduSoft Web Studio version 7.0b2 is installed AND the ISSymbol.ocx ActiveX control is present and registered, particularly if IE ActiveX permissions allow it to run.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply available vendor patch for InduSoft Web Studio 7.0B2, or disable the vulnerable ISSymbol ActiveX control in Internet Explorer until patch can be applied.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-0342 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2011-0342 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data