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High severity7.5NVD Advisory· Published May 12, 2021· Updated Jun 17, 2026

CVE-2021-25660

CVE-2021-25660

Description

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < 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.

Affected products

122
  • Siemens Foundation/Wincc Runtime Advanced14 versions
    cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:*:*:*:*:*:*:*:*+ 13 more
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:15.1:-:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:-:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:update1:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:update2:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_wincc_runtime_advanced:16:update3:*:*:*:*:*:*
    • (no CPE)range: < V15.1 Update 6, < V16 Update 4
    • (no CPE)range: All versions < V15.1 Update 6
    • (no CPE)range: All versions < V16 Update 4
  • Siemens Foundation/Simatic Hmi Comfort Panels46 versions
    cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:*:*:*:*:*:*:*:*+ 45 more
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:16:*:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_15\"_firmware:16:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_outdoor_panels_7\"_firmware:16:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_22\"_firmware:16:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_comfort_panels_4\"_firmware:16:update3:*:*:*:*:*:*
    • (no CPE)range: < V15.1 Update 6, < V16 Update 4
  • Siemens Foundation/Simatic Hmi Ktp Mobile Panels Ktp400f Firmware11 versions
    cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:*:*:*:*:*:*:*:*+ 10 more
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp400f_firmware:16:update3:*:*:*:*:*:*
  • Siemens Foundation/Simatic Hmi Ktp Mobile Panels Ktp700 Firmware22 versions
    cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:*:*:*:*:*:*:*:*+ 21 more
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700f_firmware:16:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp700_firmware:16:update3:*:*:*:*:*:*
  • Siemens Foundation/Simatic Hmi Ktp Mobile Panels Ktp900f Firmware11 versions
    cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:*:*:*:*:*:*:*:*+ 10 more
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900f_firmware:16:update3:*:*:*:*:*:*
  • Siemens Foundation/SIMATIC HMI KTP Mobile Panels14 versions
    cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:*:*:*:*:*:*:*:*+ 13 more
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:*:*:*:*:*:*:*:*range: <16
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:15.1:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:15.1:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:15.1:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:15.1:update3:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:15.1:update4:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:15.1:update5:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:16:-:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:16:update1:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:16:update2:*:*:*:*:*:*
    • cpe:2.3:o:siemens:simatic_hmi_ktp_mobile_panels_ktp900_firmware:16:update3:*:*:*:*:*:*
    • (no CPE)range: < V15.1 Update 6, < V16 Update 4
    • (no CPE)range: All versions < V15.1 Update 6
    • (no CPE)range: All versions < V16 Update 4
  • Siemens Foundation/SIMATIC HMI Comfort Outdoor Panels V15 7" & 15" (incl. SIPLUS variants)cpe-rescue2 versions
    All versions < V15.1 Update 6+ 1 more
    • (no CPE)range: All versions < V15.1 Update 6
    • (no CPE)range: All versions < V16 Update 4
  • Siemens Foundation/SIMATIC HMI Comfort Panels V15 4" - 22" (incl. SIPLUS variants)cpe-rescue2 versions
    All versions < V15.1 Update 6+ 1 more
    • (no CPE)range: All versions < V15.1 Update 6
    • (no CPE)range: All versions < V16 Update 4

Patches

Vulnerability mechanics

References

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