{"answers":{"affected":"It affects 2 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4473 exists.","fix":"No fix has been published for CVE-2023-4473 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-4473 is a critical command injection vulnerability in Zyxel NAS326 firmware, published on 30 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-4473 and fix it if it is affected.\n\nWhat it is: CVE-2023-4473 is a critical command injection vulnerability in Zyxel NAS326 firmware, published on 30 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4473 exists.\n\nAffected product: Zyxel NAS326 firmware. 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-2023-4473/ (Markdown: https://insights.sbomify.com/CVE-2023-4473/index.md)","id":"CVE-2023-4473","markdown":"https://insights.sbomify.com/CVE-2023-4473/index.md","name":"CVE-2023-4473","record":{"aliases":["GHSA-2h5j-5qmh-v4qh"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel NAS firmware","requires_auth":"none","summary":"Unauthenticated attackers can execute OS commands on Zyxel NAS devices via crafted URLs, requiring firmware updates to mitigate.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"nas326_firmware","vendor":"zyxel"},{"product":"nas542_firmware","vendor":"zyxel"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.","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":"Command injection in NAS326 firmware","id":"CVE-2023-4473","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Command injection in NAS326 firmware","id":"CVE-2023-4474"},"packages":[],"prev":{"headline":"Cryptographically weak PRNG in Opinio 7.22","id":"CVE-2023-4472"},"products":["NAS326 firmware","NAS542 firmware"],"published":"2023-11-30","related":[{"cvss_score":9.8,"headline":"Zyxel Multiple NAS Devices Command Injection","id":"CVE-2023-27992","kev_date_added":"2023-06-23","published":"2023-06-19"},{"cvss_score":9.8,"headline":"Command injection in NAS326 firmware","id":"CVE-2024-6342","kev_date_added":null,"published":"2024-09-10"},{"cvss_score":9.8,"headline":"Command injection in NAS326 firmware","id":"CVE-2024-29972","kev_date_added":null,"published":"2024-06-04"},{"cvss_score":9.8,"headline":"Command injection in NAS326 firmware","id":"CVE-2024-29973","kev_date_added":null,"published":"2024-06-04"},{"cvss_score":9.8,"headline":"File upload in NAS326 firmware","id":"CVE-2024-29974","kev_date_added":null,"published":"2024-06-04"},{"cvss_score":9.8,"headline":"Command injection in NAS326 firmware","id":"CVE-2023-35138","kev_date_added":null,"published":"2023-11-30"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-12-16","vendors":["Zyxel"]},"summary":"Unauthenticated attackers can execute OS commands on Zyxel NAS devices via crafted URLs, requiring firmware updates to mitigate.","url":"https://insights.sbomify.com/CVE-2023-4473/"}