How severe is CVE-2011-0342?

CVE-2011-0342 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2011-0342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0342?

CVE-2011-0342 affects Indusoft Web Studio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-0342?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2011-0342 published?

CVE-2011-0342 was published on 2011-09-02 and last updated on 2026-06-16.

CVE-2011-0342

CVE-2011-0342 is a critical-severity vulnerability in Indusoft Web Studio with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Indusoft Web Studio
Published: 2011-09-02
Last modified: 2026-06-16

Description

Multiple 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.

Frequently asked questions

What is CVE-2011-0342?: Multiple 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.
How severe is CVE-2011-0342?: CVE-2011-0342 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-0342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0342?: CVE-2011-0342 affects Indusoft Web Studio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-0342?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-0342 published?: CVE-2011-0342 was published on 2011-09-02 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:indusoft:web_studio:7.0b2:hotfix7.0.01.04:*:*:*:*:*:*

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