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CVE-2011-3321

CRITICAL

9.3

CVSS Severity Score

EPSS Score0.1100%

EPSS Percentile43.67th

PublishedSep 16, 2011

Last ModifiedApr 29, 2026

Vulnerability Description

Heap-based buffer overflow in the Siemens WinCC Runtime Advanced Loader, as used in SIMATIC WinCC flexible Runtime and SIMATIC WinCC (TIA Portal) Runtime Advanced, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a crafted packet to TCP port 2308.

Affected Platforms (CPE)

📦

Siemens

Simatic Wincc Flexible Runtime

All versions

📦

Siemens

Simatic Wincc Runtime

All versions

References & Advisories

🔗 http://cache.automation.siemens.com/dnl/jI/jI0NDY5AAAA_29054992_FAQ/Siemens_Security_Advisory_SSA-460621_V1_2.pdf

🔗 http://secunia.com/advisories/46011

🔗 http://support.automation.siemens.com/WW/view/en/29054992

🔗 http://www.us-cert.gov/control_systems/pdf/ICSA-11-244-01.pdf

🔗 https://exchange.xforce.ibmcloud.com/vulnerabilities/69803

🔗 http://cache.automation.siemens.com/dnl/jI/jI0NDY5AAAA_29054992_FAQ/Siemens_Security_Advisory_SSA-460621_V1_2.pdf

🔗 http://secunia.com/advisories/46011

🔗 http://support.automation.siemens.com/WW/view/en/29054992

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