CVE-2011-0340Advantech Studio Memory Corruption
Multiple buffer overflows in the ISSymbol ActiveX control in ISSymbol.ocx 61.6.0.0 and 301.1009.2904.0 in the ISSymbol virtual machine, as distributed in Advantech Studio 6.1 SP6 61.6.01.05, InduSoft Web Studio before 7.0+SP1, and InduSoft Thin Client 7.0, allow remote attackers…
Published May 4, 2011 · Updated Apr 28, 2026
Key Facts
Patch immediately- CVE-2011-0340 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Advantech Studio, Thin Client (Indusoft), Web Studio (Indusoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 32% probability of exploitation in the next 30 days.
- Fixed versions are available, including Web Studio 7.0.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
32%
Higher than 98.3% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
61/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- advisory42928
- advisory43116
- advisoryhttp://secunia.com/secunia_research/2011-36/
- advisoryhttp://secunia.com/secunia_research/2011-37/
- advisoryADV-2011-1115
- advisoryADV-2011-1116
Description
Multiple buffer overflows in the ISSymbol ActiveX control in ISSymbol.ocx 61.6.0.0 and 301.1009.2904.0 in the ISSymbol virtual machine, as distributed in Advantech Studio 6.1 SP6 61.6.01.05, InduSoft Web Studio before 7.0+SP1, and InduSoft Thin Client 7.0, allow remote attackers to execute arbitrary code via a long (1) InternationalOrder, (2) InternationalSeparator, or (3) LogFileName property value; or (4) a long bstrFileName argument to the OpenScreen method.
Affected Products
5 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Advantech StudioAdvantech | 6.1-sp6_61.6.01.05 | n/a |
| Thin ClientIndusoft | 7.0 | n/a |
| Web StudioIndusoft | 6.1, 6.1-sp6 | 7.0 |
Patched Releases
Web Studio
7.0
Timeline
Publicly disclosed
May 4, 2011
Last updated
Apr 28, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisory42928
- advisory43116
- advisorysecunia.com · 2011-36
- advisorysecunia.com · 2011-37
- advisoryADV-2011-1115
FAQ
Common Questions.
Multiple buffer overflows in the ISSymbol ActiveX control in ISSymbol.ocx 61.6.0.0 and 301.1009.2904.0 in the ISSymbol virtual machine, as distributed in Advantech Studio 6.1 SP6 61.6.01.05, InduSoft Web Studio before 7.0+SP1, and InduSoft Thin Client 7.0, allow remote attackers to execute arbitrary code via a long (1…
Affected: Advantech Studio versions 6.1-sp6_61.6.01.05; Thin Client (Indusoft) versions 7.0; Web Studio (Indusoft) versions 6.1, 6.1-sp6. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Web Studio 7.0.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2011-0340 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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