{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-73673 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-73673 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-73673 is a high-severity missing authorization vulnerability in Netis NC63 Wireless AC1200 Router, published on 14 Aug 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-2026-73673 and fix it if it is affected.\n\nWhat it is: CVE-2026-73673 is a high-severity missing authorization vulnerability in Netis NC63 Wireless AC1200 Router, published on 14 Aug 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-2026-73673 in the wild and no public exploit code.\n\nAffected product: Netis NC63 Wireless AC1200 Router. 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-2026-73673/ (Markdown: https://insights.sbomify.com/CVE-2026-73673/index.md)","id":"CVE-2026-73673","markdown":"https://insights.sbomify.com/CVE-2026-73673/index.md","name":"CVE-2026-73673","record":{"aliases":["GHSA-mqjf-hpmj-9gr8"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Netis wireless router","requires_auth":"none","summary":"Unauthenticated attackers can upload unsigned firmware to Netis NC63 routers, enabling persistent compromise and full control of the device.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Netis NC63 router firmware V3.0.0.3327 contains an unauthenticated firmware update vulnerability that allows unauthenticated attackers to submit unsigned firmware images by exploiting a missing authentication enforcement flaw in the Boa web server and netis.cgi CGI dispatcher. Attackers can send a multipart POST request to /cgi-bin/upload_fw.cgi without a valid session cookie, bypassing authentication because Boa grants access to any path containing '.cgi' regardless of cookie validation, and netis.cgi reads but does not enforce the authentication state before invoking the firmware update handler, which accepts images validated only by a forgeable additive checksum and static product strings rather than a cryptographic signature, potentially enabling persistent router compromise.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-13","github_poc":1,"max_poc_stars":3,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-13T20:50:12Z","kind":"github_poc","ref":"https://github.com/ozcanpng/CVE-2026-73673","stars":3,"title":"Original research and PoC for an unauthenticated firmware update vulnerability with missing cryptographic firmware authentication in Netis NC63"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Netis NC63 V3.0.0.3327 Unauthenticated Firmware Update with Missing Cryptographic Firmware Authentication","id":"CVE-2026-73673","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"MindsDB Minds Platform v26.1.0 Unauthenticated RCE via scratchpad exec()","id":"CVE-2026-73678"},"packages":[],"prev":{"headline":"Saurus CMS Unauthenticated Open Redirect via logout url parameter","id":"CVE-2026-73671"},"products":["Netis NC63 Wireless AC1200 Router"],"published":"2026-08-14","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-19","vendors":["Netis Systems Co., Ltd."]},"summary":"Unauthenticated attackers can upload unsigned firmware to Netis NC63 routers, enabling persistent compromise and full control of the device.","url":"https://insights.sbomify.com/CVE-2026-73673/"}