{"id":"CVE-2023-50821","aliases":["EUVD-2023-55554","GHSA-m32q-g43c-p863"],"status":"published","title":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC...","description":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions \u003c V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions \u003c V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions \u003c V19 Update 1), SIMATIC WinCC V7.5 (All versions \u003c V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions \u003c V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00182,"percentile":0.079,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2024-04-09T08:34:35Z","modified":"2026-06-17T06:40:00Z","products":[{"vendor":"siemens","product":"simatic pcs 7 v9.1"},{"vendor":"siemens","product":"simatic wincc runtime professional v17"},{"vendor":"siemens","product":"simatic wincc runtime professional v18"},{"vendor":"siemens","product":"simatic wincc runtime professional v19"},{"vendor":"siemens","product":"simatic wincc v7.5"},{"vendor":"siemens","product":"simatic wincc v8.0"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-730482.html","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50821"},{"url":"https://github.com/advisories/GHSA-m32q-g43c-p863"}],"sources":{"cve":[{"id":"CVE-2023-50821","description":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions \u003c V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions \u003c V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions \u003c V19 Update 1), SIMATIC WinCC V7.5 (All versions \u003c V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions \u003c V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.","status":"published","published":"2024-04-09T08:34:35.452Z","modified":"2025-02-26T18:41:29.599Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:34.923818Z"}],"euvd":[{"id":"EUVD-2023-55554","description":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions \u003c V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions \u003c V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions \u003c V19 Update 1), SIMATIC WinCC V7.5 (All versions \u003c V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions \u003c V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.","status":"published","published":"2024-04-09T08:34:35Z","modified":"2025-02-26T18:41:29Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:53:22.849013Z"}],"ghsa":[{"id":"GHSA-m32q-g43c-p863","title":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC...","description":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions), SIMATIC WinCC Runtime Professional V18 (All versions), SIMATIC WinCC Runtime Professional V19 (All versions \u003c V19 Update 1), SIMATIC WinCC V7.5 (All versions \u003c V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.","status":"published","published":"2024-04-09T09:31:11Z","modified":"2024-08-08T05:06:15Z","cvss":[{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/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":"medium"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:57:53.484343Z"}],"nvd":[{"id":"CVE-2023-50821","description":"A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions \u003c V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions \u003c V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions \u003c V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions \u003c V19 Update 1), SIMATIC WinCC V7.5 (All versions \u003c V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions \u003c V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.","status":"published","published":"2024-04-09T09:15:21.27Z","modified":"2026-06-17T06:40:00.647Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/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":"medium","assessor":"secondary"},{"version":"3.1","score":6.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:09:11.362739Z"}]}}