{"id":"CVE-2011-3321","aliases":["EUVD-2011-3285","GHSA-3gp6-fj2v-m5f7"],"status":"published","title":"Heap-based buffer overflow in the Siemens WinCC Runtime Advanced Loader, as used in SIMATIC WinCC...","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.","severity":{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0707,"percentile":0.94252,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2011-09-15T21:00:00Z","modified":"2026-06-16T23:33:04Z","products":[{"vendor":"siemens","product":"simatic_wincc_flexible_runtime"},{"vendor":"siemens","product":"simatic_wincc_runtime"}],"references":[{"url":"http://support.automation.siemens.com/WW/view/en/29054992","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://cache.automation.siemens.com/dnl/jI/jI0NDY5AAAA_29054992_FAQ/Siemens_Security_Advisory_SSA-460621_V1_2.pdf","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/69803","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://secunia.com/advisories/46011","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.us-cert.gov/control_systems/pdf/ICSA-11-244-01.pdf","tags":["x_refsource_MISC","x_transferred","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-3321"},{"url":"https://github.com/advisories/GHSA-3gp6-fj2v-m5f7"}],"sources":{"cve":[{"id":"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.","status":"published","published":"2011-09-15T21:00:00Z","modified":"2024-08-06T23:29:56.827Z","updated_at":"2026-11-02T14:35:37.324501Z"}],"euvd":[{"id":"EUVD-2011-3285","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.","status":"published","published":"2011-09-15T21:00:00Z","modified":"2024-08-06T23:29:56Z","updated_at":"2026-11-03T01:39:52.044449Z"}],"ghsa":[{"id":"GHSA-3gp6-fj2v-m5f7","title":"Heap-based buffer overflow in the Siemens WinCC Runtime Advanced Loader, as used in SIMATIC WinCC...","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.","status":"published","published":"2022-05-17T01:53:42Z","modified":"2023-02-03T05:05:48Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:53:47.833456Z"}],"nvd":[{"id":"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.","status":"published","published":"2011-09-16T12:35:26.45Z","modified":"2026-06-16T23:33:04.67Z","cvss":[{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:09.988332Z"}]}}