{"id":"CVE-2021-34581","aliases":["EUVD-2021-21231","GHSA-v448-m2g5-fm7c"],"status":"published","title":"WAGO: Denial of Service vulnerability inside the OpenSSL implementation","description":"Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01022,"percentile":0.63898,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-772"],"published":"2021-08-31T10:33:02Z","modified":"2026-06-17T03:56:10Z","products":[{"vendor":"wago","product":"750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889"},{"vendor":"wago","product":"750-831\\/000-002_firmware"},{"vendor":"wago","product":"750-831_firmware"},{"vendor":"wago","product":"750-880\\/025-000_firmware"},{"vendor":"wago","product":"750-880\\/025-001_firmware"},{"vendor":"wago","product":"750-880\\/025-002_firmware"},{"vendor":"wago","product":"750-880\\/040-000_firmware"},{"vendor":"wago","product":"750-880_firmware"},{"vendor":"wago","product":"750-881_firmware"},{"vendor":"wago","product":"750-889_firmware"}],"references":[{"url":"https://cert.vde.com/en-us/advisories/vde-2021-038","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34581"},{"url":"https://github.com/advisories/GHSA-v448-m2g5-fm7c"}],"sources":{"cve":[{"id":"CVE-2021-34581","title":"WAGO: Denial of Service vulnerability inside the OpenSSL implementation","description":"Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.","status":"published","published":"2021-08-31T10:33:02.999Z","modified":"2024-09-17T00:42:35.318Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-21231","description":"Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.","status":"published","published":"2021-08-31T10:33:02Z","modified":"2024-09-17T00:42:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:28:56.465986Z"}],"ghsa":[{"id":"GHSA-v448-m2g5-fm7c","title":"Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of...","description":"Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.","status":"published","published":"2022-05-24T19:12:37Z","modified":"2023-01-30T05:01:53Z","cwes":["CWE-772"],"updated_at":"2026-11-02T14:46:30.304291Z"}],"nvd":[{"id":"CVE-2021-34581","description":"Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.","status":"published","published":"2021-08-31T11:15:07.83Z","modified":"2026-06-17T03:56:10.183Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-772"],"updated_at":"2026-11-02T14:06:57.67549Z"}]}}