{"cve":"CVE-2011-3321","nvd":{"published":"2011-09-16T12:35:26.450","modified":"2026-06-16T23:33:04.670","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["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"],"products":["siemens:simatic_wincc_flexible_runtime","siemens:simatic_wincc_runtime"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-3321","score":0.0707,"percentile":0.94212,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}