{"id":"CVE-2021-25660","aliases":["EUVD-2021-12552","GHSA-rmq3-87p9-r2fp"],"status":"published","title":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels 7\\\" \u0026 15\\\" (incl....","description":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions \u003c V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions \u003c V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00988,"percentile":0.62759,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-788"],"published":"2021-05-12T13:18:22Z","modified":"2026-06-17T03:42:17Z","products":[{"vendor":"siemens","product":"simatic hmi comfort outdoor panels v15 7\\\" \u0026 15\\\" (incl. siplus variants)"},{"vendor":"siemens","product":"simatic hmi comfort outdoor panels v16 7\\\" \u0026 15\\\" (incl. siplus variants)"},{"vendor":"siemens","product":"simatic hmi comfort panels v15 4\\\" - 22\\\" (incl. siplus variants)"},{"vendor":"siemens","product":"simatic hmi comfort panels v16 4\\\" - 22\\\" (incl. siplus variants)"},{"vendor":"siemens","product":"simatic hmi ktp mobile panels v15 ktp400f, ktp700, ktp700f, ktp900 and ktp900f"},{"vendor":"siemens","product":"simatic hmi ktp mobile panels v16 ktp400f, ktp700, ktp700f, ktp900 and ktp900f"},{"vendor":"siemens","product":"simatic wincc runtime advanced v15"},{"vendor":"siemens","product":"simatic wincc runtime advanced v16"},{"vendor":"siemens","product":"simatic_hmi_comfort_outdoor_panels_15\\\"_firmware"},{"vendor":"siemens","product":"simatic_hmi_comfort_outdoor_panels_7\\\"_firmware"},{"vendor":"siemens","product":"simatic_hmi_comfort_panels_22\\\"_firmware"},{"vendor":"siemens","product":"simatic_hmi_comfort_panels_4\\\"_firmware"},{"vendor":"siemens","product":"simatic_hmi_ktp_mobile_panels_ktp400f_firmware"},{"vendor":"siemens","product":"simatic_hmi_ktp_mobile_panels_ktp700_firmware"},{"vendor":"siemens","product":"simatic_hmi_ktp_mobile_panels_ktp700f_firmware"},{"vendor":"siemens","product":"simatic_hmi_ktp_mobile_panels_ktp900_firmware"},{"vendor":"siemens","product":"simatic_hmi_ktp_mobile_panels_ktp900f_firmware"},{"vendor":"siemens","product":"simatic_wincc_runtime_advanced"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25660"},{"url":"https://github.com/advisories/GHSA-rmq3-87p9-r2fp"}],"sources":{"cve":[{"id":"CVE-2021-25660","description":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions \u003c V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions \u003c V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.","status":"published","published":"2021-05-12T13:18:22Z","modified":"2026-06-02T19:23:44.242Z","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":"adp"}],"cwes":["CWE-788"],"updated_at":"2026-11-02T14:32:59.430294Z"}],"euvd":[{"id":"EUVD-2021-12552","description":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions \u003c V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions \u003c V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.","status":"published","published":"2021-05-12T13:18:22Z","modified":"2026-06-02T19:23:44Z","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":"2026-11-02T18:20:55.231104Z"}],"ghsa":[{"id":"GHSA-rmq3-87p9-r2fp","title":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels 7\\\" \u0026 15\\\" (incl....","description":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced (All versions \u003c V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.","status":"published","published":"2022-05-24T19:02:15Z","modified":"2026-06-02T21:31:36Z","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-119","CWE-788"],"updated_at":"2026-11-02T15:08:30.717444Z"}],"nvd":[{"id":"CVE-2021-25660","description":"A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions \u003c V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions \u003c V16 Update 4). SmartVNC has an out-of-bounds memory access vulnerability that could be triggered on the server side when sending data from the client, which could result in a Denial-of-Service condition.","status":"published","published":"2021-05-12T14:15:11.253Z","modified":"2026-06-17T03:42:17.95Z","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":"primary"},{"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":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-788","CWE-119"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}