{"id":"CVE-2026-35225","aliases":["EUVD-2026-25222","GHSA-c7pv-j8xr-mmhj"],"status":"published","title":"Improper timeout handling in CODESYS EtherNetIP","description":"An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00412,"percentile":0.35797,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2026-04-23T13:54:51Z","modified":"2026-10-26T22:10:00Z","products":[{"vendor":"codesys","product":"codesys ethernetip"}],"references":[{"url":"https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-04_vde-2026-040.json","tags":["vendor-advisory"]},{"url":"https://www.certvde.com/en/advisories/VDE-2026-040/","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35225"},{"url":"https://www.certvde.com/en/advisories/VDE-2026-040"},{"url":"https://github.com/advisories/GHSA-c7pv-j8xr-mmhj"}],"sources":{"cve":[{"id":"CVE-2026-35225","title":"Improper timeout handling in CODESYS EtherNetIP","description":"An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.","status":"published","published":"2026-04-23T13:54:51.863Z","modified":"2026-04-23T15:35:43.352Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:20:05.505362Z"}],"euvd":[{"id":"EUVD-2026-25222","description":"An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.","status":"published","published":"2026-04-23T13:54:51Z","modified":"2026-04-23T15:35:43Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:24:19.171803Z"}],"ghsa":[{"id":"GHSA-c7pv-j8xr-mmhj","title":"An unauthenticated remote attacker is able to exhaust all available TCP connections in the...","description":"An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.","status":"published","published":"2026-04-23T18:33:03Z","modified":"2026-04-23T18:33:23Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:07:36.455512Z"}],"nvd":[{"id":"CVE-2026-35225","description":"An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.","status":"published","published":"2026-04-23T15:37:23.377Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:12:15.867234Z"}]}}