{"id":"CVE-2019-12255","aliases":["EUVD-2019-3897","GHSA-h297-57pm-6g4c"],"status":"published","title":"Wind River VxWorks 6.5 through 6.9.3 has a Buffer Overflow in the TCP component (issue 1 of 4)....","description":"Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.7525,"percentile":0.99515,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119","CWE-120"],"published":"2019-08-09T19:18:03Z","modified":"2026-06-17T02:14:18Z","exploits":[{"source":"exploitdb","id":"EDB-47233","title":"VxWorks 6.8 - TCP Urgent Pointer = 0 Integer Underflow","type":"dos","platform":"vxworks","date":"2019-08-12","url":"https://www.exploit-db.com/exploits/47233"},{"source":"pocgithub","id":"sud0woodo/Urgent11-Suricata-LUA-scripts","title":"sud0woodo/Urgent11-Suricata-LUA-scripts","date":"2019-11-12","url":"https://github.com/sud0woodo/Urgent11-Suricata-LUA-scripts"}],"products":[{"vendor":"belden","product":"garrettcom_magnum_dx940e_firmware"},{"vendor":"belden","product":"hirschmann_hios"},{"vendor":"netapp","product":"e-series_santricity_os_controller"},{"vendor":"siemens","product":"power_meter_9410_firmware"},{"vendor":"siemens","product":"power_meter_9810_firmware"},{"vendor":"siemens","product":"ruggedcom_win7000_firmware"},{"vendor":"siemens","product":"ruggedcom_win7018_firmware"},{"vendor":"siemens","product":"ruggedcom_win7025_firmware"},{"vendor":"siemens","product":"ruggedcom_win7200_firmware"},{"vendor":"siemens","product":"siprotec_5_firmware"},{"vendor":"sonicwall","product":"sonicos"},{"vendor":"windriver","product":"vxworks"}],"references":[{"url":"https://support2.windriver.com/index.php?page=security-notices","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Vendor Advisory"]},{"url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20190802-0001/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://support2.windriver.com/index.php?page=cve\u0026on=view\u0026id=CVE-2019-12255","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://support.f5.com/csp/article/K41190253","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://support.f5.com/csp/article/K41190253?utm_source=f5support\u0026amp%3Butm_medium=RSS","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12255"},{"url":"https://support.f5.com/csp/article/K41190253?utm_source=f5support\u0026amp;utm_medium=RSS"},{"url":"https://github.com/advisories/GHSA-h297-57pm-6g4c"}],"sources":{"cve":[{"id":"CVE-2019-12255","description":"Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.","status":"published","published":"2019-08-09T19:18:03Z","modified":"2024-08-04T23:17:39.534Z","updated_at":"2026-11-02T14:20:23.697579Z"}],"euvd":[{"id":"EUVD-2019-3897","description":"Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.","status":"published","published":"2019-08-09T19:18:03Z","modified":"2024-08-04T23:17:39Z","updated_at":"2026-11-03T02:40:46.416719Z"}],"ghsa":[{"id":"GHSA-h297-57pm-6g4c","title":"Wind River VxWorks 6.5 through 6.9.3 has a Buffer Overflow in the TCP component (issue 1 of 4)....","description":"Wind River VxWorks 6.5 through 6.9.3 has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow. Affected versions: 6.6, 6.7, 6.8, 6.9","status":"published","published":"2022-05-24T16:53:00Z","modified":"2023-01-27T05:02:51Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119","CWE-120"],"updated_at":"2026-11-02T14:42:06.943612Z"}],"nvd":[{"id":"CVE-2019-12255","description":"Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.","status":"published","published":"2019-08-09T20:15:11.347Z","modified":"2026-06-17T02:14:18.693Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:05:22.878504Z"}]}}