{"id":"CVE-2021-22275","aliases":["EUVD-2021-9421","GHSA-r593-v4g4-3636"],"status":"published","title":"Denial of service vulnerability on Automation Runtime webserver","description":"Buffer Overflow vulnerability in B\u0026R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00961,"percentile":0.62031,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2022-05-13T14:23:20Z","modified":"2026-06-17T03:36:55Z","products":[{"vendor":"b\u0026r automation","product":"automation runtime webserver"},{"vendor":"br-automation","product":"automation_runtime"}],"references":[{"url":"https://www.br-automation.com/downloads_br_productcatalogue/assets/1625405588264-en-original-1.0.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-22275"},{"url":"https://github.com/advisories/GHSA-r593-v4g4-3636"}],"sources":{"cve":[{"id":"CVE-2021-22275","title":"Denial of service vulnerability on Automation Runtime webserver","description":"Buffer Overflow vulnerability in B\u0026R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.","status":"published","published":"2022-05-13T14:23:20Z","modified":"2024-08-03T18:37:18.446Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:32:57.701381Z"}],"euvd":[{"id":"EUVD-2021-9421","description":"Buffer Overflow vulnerability in B\u0026R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.","status":"published","published":"2022-05-13T14:23:20Z","modified":"2024-08-03T18:37:18Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:25:03.183524Z"}],"ghsa":[{"id":"GHSA-r593-v4g4-3636","title":"Buffer Overflow vulnerability in B\u0026R Automation Runtime webserver allows an unauthenticated...","description":"Buffer Overflow vulnerability in B\u0026R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.","status":"published","published":"2022-05-14T00:01:43Z","modified":"2023-02-02T05:02:19Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:51:24.995331Z"}],"nvd":[{"id":"CVE-2021-22275","description":"Buffer Overflow vulnerability in B\u0026R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.","status":"published","published":"2022-05-13T15:15:08.13Z","modified":"2026-06-17T03:36:55.09Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-120"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}