{"cve":{"cve_id":"CVE-2026-34021","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00196,"epss_percentile":0.09386,"epss_as_of":"2026-06-23","description":"The Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320, uses RS-485 communication between the server and the microcontroller without cryptographic protection. An attacker with access to the communication path between the server and the microcontroller can sniff RS-485 messages and replay previously observed messages. This can be used, for example, to spoof a \"quit alarm\" message and continuously deactivate the safe alarm.","published_at":"2026-06-15T10:02:09.049000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":8.6,"cvss_v4_vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-294"],"nvd_references":["https://wertheim-safes.com/safe-deposit-boxes/","https://r.sec-consult.com/wertdev"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:29:56.591002Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"A","value_label":"Adjacent"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"wertheim-gmbh","vendor_name":"Wertheim GmbH","product_slug":"wertheim-safecontroller-5400-hardware-for-vault-rooms-safe-deposit-locker-system-microcontroller","product_name":"Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller)","version_start":"Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320","version_start_inclusive":true,"version_end":"Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320","version_end_inclusive":true,"cpe23_uri":"cve5:wertheim-gmbh:wertheim-safecontroller-5400-hardware-for-vault-rooms-safe-deposit-locker-system-microcontroller:Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320:Wertheim SafeController 5400, Controller 5400 - AssemblyVersion 6.11.8130.22320"}],"exploit_refs":[],"news":[],"references":[{"url":"https://wertheim-safes.com/safe-deposit-boxes/","source_type":"MISC","tags":[]},{"url":"https://r.sec-consult.com/wertdev","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-15T10:02:09.049000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:53:20.032350Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:20.032350Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:20.032350Z","label":"CVSS score revised","source":"cvelistv5"}]}