{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-82784 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-82784 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82784 is a medium-severity missing authorization vulnerability in Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82784 and fix it if it is affected.\n\nWhat it is: CVE-2026-82784 is a medium-severity missing authorization vulnerability in Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*, published on 14 Sep 2026. 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-2026-82784 in the wild and no public exploit code.\n\nAffected product: Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. 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-2026-82784/ (Markdown: https://insights.sbomify.com/CVE-2026-82784/index.md)","id":"CVE-2026-82784","markdown":"https://insights.sbomify.com/CVE-2026-82784/index.md","name":"CVE-2026-82784","record":{"aliases":["GHSA-5w7g-j8f5-2795"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Remote I/O Coupler","requires_auth":"none","summary":"Attackers can access REST APIs without authentication to read I/O values or control outputs on Contec Remote I/O Coupler Units.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Missing authentication for critical function vulnerability exists in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*. An attacker may execute a REST API without authentication, which could allow the attacker to retrieve I/O values and/or control the output.","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":"Missing authorization in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*","id":"CVE-2026-82784","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Memory corruption in Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*","id":"CVE-2026-82785"},"packages":[],"prev":{"headline":"Hardcoded credentials in Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041","id":"CVE-2026-82783"},"products":["Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*"],"published":"2026-09-14","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["Contec Co., Ltd."]},"summary":"Attackers can access REST APIs without authentication to read I/O values or control outputs on Contec Remote I/O Coupler Units.","url":"https://insights.sbomify.com/CVE-2026-82784/"}