{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-40856 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-40856 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40856 is a high-severity missing authorization vulnerability in WNC T-Mobile 5G Box IDU, published on 16 Sep 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-2026-40856 and fix it if it is affected.\n\nWhat it is: CVE-2026-40856 is a high-severity missing authorization vulnerability in WNC T-Mobile 5G Box IDU, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-40856 in the wild and no public exploit code.\n\nAffected product: WNC T-Mobile 5G Box IDU. 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-2026-40856/ (Markdown: https://insights.sbomify.com/CVE-2026-40856/index.md)","id":"CVE-2026-40856","markdown":"https://insights.sbomify.com/CVE-2026-40856/index.md","name":"CVE-2026-40856","record":{"aliases":["GHSA-xw9f-4565-4fvc"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["data_read","account_takeover"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"5G Box IDU router","requires_auth":"none","summary":"Remote attackers can access unauthenticated endpoints to retrieve sensitive configuration data, including admin passwords and WiFi keys, from T-Mobile 5G Box IDU routers.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"WNC T-Mobile 5G Box IDU router is vulnerable to improper access control. The vulnerability exists in the wnc_maccheck.cgi endpoint, which is accessible without authentication. It allows a remote attacker to retrieve sensitive configuration data, including the administrator web password, WiFi passphrase, and technical device information.This issue has been fixed in firmware version 1.1.0.651412","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":"Config disclosure in T-Mobile 5G Box IDU routers","id":"CVE-2026-40856","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"CSRF token bypass in T-Mobile 5G Box IDU routers","id":"CVE-2026-40857"},"packages":[],"prev":{"headline":"Command Injection in T-Mobile 5G Box IDU router via ping functionality","id":"CVE-2026-40855"},"products":["T-Mobile 5G Box IDU"],"published":"2026-09-16","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["WNC"]},"summary":"Remote attackers can access unauthenticated endpoints to retrieve sensitive configuration data, including admin passwords and WiFi keys, from T-Mobile 5G Box IDU routers.","url":"https://insights.sbomify.com/CVE-2026-40856/"}