{"id":"CVE-2023-35920","aliases":["EUVD-2023-39911","GHSA-8v8f-xp2h-22pm"],"status":"published","title":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S ...","description":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S (All versions \u003c V3.3.4), SIMATIC MV550 H (All versions \u003c V3.3.4), SIMATIC MV550 S (All versions \u003c V3.3.4), SIMATIC MV560 U (All versions \u003c V3.3.4), SIMATIC MV560 X (All versions \u003c V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.","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/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00866,"percentile":0.58942,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2023-07-11T09:07:08Z","modified":"2026-10-23T23:10:00Z","products":[{"vendor":"siemens","product":"simatic mv540 h"},{"vendor":"siemens","product":"simatic mv540 s"},{"vendor":"siemens","product":"simatic mv550 h"},{"vendor":"siemens","product":"simatic mv550 s"},{"vendor":"siemens","product":"simatic mv560 u"},{"vendor":"siemens","product":"simatic mv560 x"},{"vendor":"siemens","product":"simatic_mv540_h"},{"vendor":"siemens","product":"simatic_mv540_h_firmware"},{"vendor":"siemens","product":"simatic_mv540_s"},{"vendor":"siemens","product":"simatic_mv540_s_firmware"},{"vendor":"siemens","product":"simatic_mv550_h"},{"vendor":"siemens","product":"simatic_mv550_h_firmware"},{"vendor":"siemens","product":"simatic_mv550_s"},{"vendor":"siemens","product":"simatic_mv550_s_firmware"},{"vendor":"siemens","product":"simatic_mv560_u"},{"vendor":"siemens","product":"simatic_mv560_u_firmware"},{"vendor":"siemens","product":"simatic_mv560_x"},{"vendor":"siemens","product":"simatic_mv560_x_firmware"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-561322.pdf","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-35920"},{"url":"https://github.com/advisories/GHSA-8v8f-xp2h-22pm"}],"sources":{"cve":[{"id":"CVE-2023-35920","description":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S (All versions \u003c V3.3.4), SIMATIC MV550 H (All versions \u003c V3.3.4), SIMATIC MV550 S (All versions \u003c V3.3.4), SIMATIC MV560 U (All versions \u003c V3.3.4), SIMATIC MV560 X (All versions \u003c V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.","status":"published","published":"2023-07-11T09:07:08.275Z","modified":"2024-11-12T16:53:53.862Z","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/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:33.462059Z"}],"euvd":[{"id":"EUVD-2023-39911","description":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S (All versions \u003c V3.3.4), SIMATIC MV550 H (All versions \u003c V3.3.4), SIMATIC MV550 S (All versions \u003c V3.3.4), SIMATIC MV560 U (All versions \u003c V3.3.4), SIMATIC MV560 X (All versions \u003c V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.","status":"published","published":"2023-07-11T09:07:08Z","modified":"2024-11-12T16:53:53Z","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/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:05:04.420026Z"}],"ghsa":[{"id":"GHSA-8v8f-xp2h-22pm","title":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S ...","description":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S (All versions \u003c V3.3.4), SIMATIC MV550 H (All versions \u003c V3.3.4), SIMATIC MV550 S (All versions \u003c V3.3.4), SIMATIC MV560 U (All versions \u003c V3.3.4), SIMATIC MV560 X (All versions \u003c V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.","status":"published","published":"2023-07-11T12:30:35Z","modified":"2024-04-04T05:55:23Z","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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:56:37.005335Z"}],"nvd":[{"id":"CVE-2023-35920","description":"A vulnerability has been identified in SIMATIC MV540 H (All versions \u003c V3.3.4), SIMATIC MV540 S (All versions \u003c V3.3.4), SIMATIC MV550 H (All versions \u003c V3.3.4), SIMATIC MV550 S (All versions \u003c V3.3.4), SIMATIC MV560 U (All versions \u003c V3.3.4), SIMATIC MV560 X (All versions \u003c V3.3.4). Affected devices cannot properly process specially crafted IP packets sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.","status":"published","published":"2023-07-11T10:15:10.543Z","modified":"2026-10-23T23:10:00.157Z","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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:08:15.127597Z"}]}}