{"answers":{"affected":"It affects 10 products.","exploited":"There is no known exploitation of CVE-2021-25662 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-25662 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-25662 is a high-severity denial of service vulnerability in Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants), published on 12 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-25662 and fix it if it is affected.\n\nWhat it is: CVE-2021-25662 is a high-severity denial of service vulnerability in Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants), published on 12 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-25662 in the wild and no public exploit code.\n\nAffected product: Siemens SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants). No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-25662/ (Markdown: https://insights.sbomify.com/CVE-2021-25662/index.md)","id":"CVE-2021-25662","markdown":"https://insights.sbomify.com/CVE-2021-25662/index.md","name":"CVE-2021-25662","record":{"aliases":["GHSA-444h-8mr2-wm66"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Siemens HMI Panels","requires_auth":"none","summary":"A flaw in the SmartVNC client allows a remote attacker to cause a denial-of-service condition by sending a modified packet, affecting Siemens HMI panels and WinCC Runtime.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"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","vendor":"siemens"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-755","name":"Improper Handling of Exceptional Conditions"}],"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 client fails to handle an exception properly if the program execution process is modified after sending a packet from the server, which could result in a Denial-of-Service condition.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Denial of service in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-25662","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Denial of service in Capital Embedded AR Classic 431-422","id":"CVE-2021-25663"},"packages":[],"prev":{"headline":"Memory corruption in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-25661"},"products":["SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants)","SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants)","SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F","SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F","SIMATIC WinCC Runtime Advanced V15","SIMATIC WinCC Runtime Advanced V16"],"published":"2021-05-12","related":[{"cvss_score":9.8,"headline":"Memory corruption in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-27384","kev_date_added":null,"published":"2021-05-12"},{"cvss_score":7.5,"headline":"Memory corruption in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-25660","kev_date_added":null,"published":"2021-05-12"},{"cvss_score":7.5,"headline":"Memory corruption in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-25661","kev_date_added":null,"published":"2021-05-12"},{"cvss_score":7.5,"headline":"Denial of service in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-27383","kev_date_added":null,"published":"2021-05-12"},{"cvss_score":7.5,"headline":"Denial of service in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-27385","kev_date_added":null,"published":"2021-05-12"},{"cvss_score":7.5,"headline":"Denial of service in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)","id":"CVE-2021-27386","kev_date_added":null,"published":"2021-05-12"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-02","vendors":["Siemens"]},"summary":"A flaw in the SmartVNC client allows a remote attacker to cause a denial-of-service condition by sending a modified packet, affecting Siemens HMI panels and WinCC Runtime.","url":"https://insights.sbomify.com/CVE-2021-25662/"}