Unrated severityNVD Advisory· Published Sep 16, 2011· Updated Jun 16, 2026
CVE-2011-3321
CVE-2011-3321
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- cpe:2.3:a:siemens:simatic_wincc_flexible_runtime:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_runtime:-:*:*:*:advanced:*:*:*
Patches
Vulnerability mechanics
References
5- secunia.com/advisories/46011nvdVendor Advisory
- www.us-cert.gov/control_systems/pdf/ICSA-11-244-01.pdfnvdUS Government Resource
- cache.automation.siemens.com/dnl/jI/jI0NDY5AAAA_29054992_FAQ/Siemens_Security_Advisory_SSA-460621_V1_2.pdfnvd
- support.automation.siemens.com/WW/view/en/29054992nvd
- exchange.xforce.ibmcloud.com/vulnerabilities/69803nvd
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