Multiple buffer overflows in the InduSoft ISSymbol ActiveX control in ISSymbol.ocx 301.1104.601.0 in InduSoft Web Studio 7.0B2 hotfix 7.0.0…

published 2011-09-02 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-0368

cvss: 10.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 5.9%; EPSS 5.9% chance of exploitation in 30 days, percentile 93%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-11-273-02 updated 2025-06-05 cvss 10.0

InduSoft ISSymbol ActiveX Control Buffer Overflow

InduSoft Web Studio 7.0B2_Build:_0301.1009.2904.0000, 7.0_Build:_0301.1102.0303.0000
affected: mitigation

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

5.92% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

secunia.com /advisories/44875
third-party-advisory, vendor-advisory
secunia.com /secunia_research/2011-61/
vendor-advisory
ics-cert.us-cert.gov /advisories/ICSA-11-273-02
indusoft.com /hotfixes/hotfixes.php
securityfocus.com /bid/49403
vdb-entry

Sources

CVE List CVE-2011-0342
NVD CVE-2011-0342

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary