What’s Vulnerable › Vulnerabilities

CVE-2014-0789: Schneider Electric OPC Factory Server Buffer Overflow

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-04-04 · updated 2026-06-17
• Weakness: CWE-122

Description

Multiple buffer overflows in the OPC Automation 2.0 Server Object ActiveX control in Schneider Electric OPC Factory Server (OFS) TLXCDSUOFS33 3.5 and earlier, TLXCDSTOFS33 3.5 and earlier, TLXCDLUOFS33 3.5 and earlier, TLXCDLTOFS33 3.5 and earlier, and TLXCDLFOFS33 3.5 and earlier allow remote attackers to cause a denial of service via long arguments to unspecified functions.

Affected products

• Schneider-Electric Opc Factory Server Tlxcdlfofs: through 3.35
• Schneider-Electric Opc Factory Server Tlxcdltofs: through 3.35
• Schneider-Electric Opc Factory Server Tlxcdluofs: through 3.35
• Schneider-Electric Opc Factory Server Tlxcdstofs: through 3.35
• Schneider-Electric Opc Factory Server Tlxcdsuofs: through 3.35

References

• http://www.schneider-electric.com/corporate/en/support/cybersecurity/viewer-news.page?c_filepath=/templatedata/Content/News/data/en/local/cybersecurity/general_information/2014/03/20140325_vulnerability_disclosure_opc_factory_server.xml
• http://www2.schneider-electric.com/sites/corporate/en/support/cybersecurity/cybersecurity.page
• https://www.cisa.gov/news-events/ics-advisories/icsa-14-093-01
• http://ics-cert.us-cert.gov/advisories/ICSA-14-093-01
• http://www.schneider-electric.com/corporate/en/support/cybersecurity/viewer-news.page?c_filepath=/templatedata/Content/News/data/en/local/cybersecurity/general_information/2014/03/20140325_vulnerability_disclosure_opc_factory_server.xml

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