{"id":"CVE-2011-3486","aliases":["EUVD-2011-3449","GHSA-74h6-2hgj-rvpx"],"status":"published","title":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via...","description":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.4965,"percentile":0.98903,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2011-09-16T14:00:00Z","modified":"2026-06-16T23:33:20Z","exploits":[{"source":"exploitdb","id":"EDB-17835","title":"Beckhoff TwinCAT 2.11.0.2004 - Denial of Service","type":"dos","platform":"windows","date":"2011-09-14","verified":true,"url":"https://www.exploit-db.com/exploits/17835"},{"source":"metasploit","id":"auxiliary/dos/scada/beckhoff_twincat","title":"Beckhoff TwinCAT SCADA PLC 2.11.0.2004 DoS","type":"auxiliary","date":"2011-09-13","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/dos/scada/beckhoff_twincat"}],"products":[{"vendor":"beckhoff","product":"twincat"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/69765","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://securityreason.com/securityalert/8380","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-06.pdf","tags":["x_refsource_MISC","x_transferred","US Government Resource"]},{"url":"http://osvdb.org/75495","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://aluigi.altervista.org/adv/twincat_1-adv.txt","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-3486"},{"url":"https://github.com/advisories/GHSA-74h6-2hgj-rvpx"}],"sources":{"cve":[{"id":"CVE-2011-3486","description":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.","status":"published","published":"2011-09-16T14:00:00Z","modified":"2024-08-06T23:37:47.721Z","updated_at":"2026-11-02T14:35:37.324501Z"}],"euvd":[{"id":"EUVD-2011-3449","description":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.","status":"published","published":"2011-09-16T14:00:00Z","modified":"2024-08-06T23:37:47Z","updated_at":"2026-11-03T01:39:51.405142Z"}],"ghsa":[{"id":"GHSA-74h6-2hgj-rvpx","title":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via...","description":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.","status":"published","published":"2022-05-17T01:53:20Z","modified":"2023-02-03T05:05:57Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:53:49.274652Z"}],"nvd":[{"id":"CVE-2011-3486","description":"Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.","status":"published","published":"2011-09-16T14:28:11.95Z","modified":"2026-06-16T23:33:20.973Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:09.988332Z"}]}}