{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34021 exists.","fix":"No fix has been published for CVE-2026-34021 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-34021 is a high-severity vulnerability in Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller), published on 15 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-34021 and fix it if it is affected.\n\nWhat it is: CVE-2026-34021 is a high-severity vulnerability in Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller), published on 15 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34021 exists.\n\nAffected product: Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller). 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-2026-34021/ (Markdown: https://insights.sbomify.com/CVE-2026-34021/index.md)","id":"CVE-2026-34021","markdown":"https://insights.sbomify.com/CVE-2026-34021/index.md","name":"CVE-2026-34021","record":{"aliases":["GHSA-4w8g-q38j-gm8m"],"analysis":{"component_type":"ics_ot","fix_type":"no_fix_stated","impacts":["security_bypass","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Safe controller hardware","requires_auth":"none","summary":"Attackers can sniff and replay unencrypted RS-485 messages to spoof alarm deactivation commands on Wertheim SafeController 5400 systems.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"SEC-VLab","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-294","name":"Authentication Bypass by Capture-replay"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Lack of cryptographic protection in Wertheim SafeController 5400 enables RS-485 message sniffing and replay","id":"CVE-2026-34021","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Weak custom cryptography and hard-coded keys in Wertheim SafeController 65000 allow traffic decryption","id":"CVE-2026-34022"},"packages":[],"prev":{"headline":"Apache OpenMeetings: Login Credentials Passed via GET Query Parameters","id":"CVE-2026-34020"},"products":["Wertheim SafeController 5400 Hardware for VAULT ROOMS (Safe Deposit Locker System - Microcontroller)"],"published":"2026-06-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-15","vendors":["Wertheim GmbH"]},"summary":"Attackers can sniff and replay unencrypted RS-485 messages to spoof alarm deactivation commands on Wertheim SafeController 5400 systems.","url":"https://insights.sbomify.com/CVE-2026-34021/"}