{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-22923 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-22923 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-22923 is a medium-severity vulnerability in Zyxel NBG-418N v2 firmware, published on 1 May 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-22923 and fix it if it is affected.\n\nWhat it is: CVE-2023-22923 is a medium-severity vulnerability in Zyxel NBG-418N v2 firmware, published on 1 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-22923 in the wild and no public exploit code.\n\nAffected product: Zyxel NBG-418N v2 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-2023-22923/ (Markdown: https://insights.sbomify.com/CVE-2023-22923/index.md)","id":"CVE-2023-22923","markdown":"https://insights.sbomify.com/CVE-2023-22923/index.md","name":"CVE-2023-22923","record":{"aliases":["GHSA-fggw-7j3v-3jcw"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel router firmware","requires_auth":"low_privilege","summary":"A remote authenticated attacker can cause denial-of-service on Zyxel NBG-418N v2 routers via a format string vulnerability in the firmware.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"nbg-418n_firmware","vendor":"zyxel"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-134","name":"Use of Externally-Controlled Format String"}],"description":"A format string vulnerability in a binary of the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote authenticated attacker to cause denial-of-service (DoS) conditions on an affected device.","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":"Other in NBG-418N v2 firmware","id":"CVE-2023-22923","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22924"},"packages":[],"prev":{"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22922"},"products":["NBG-418N v2 firmware"],"published":"2023-05-01","related":[{"cvss_score":8.8,"headline":"Cross-site request forgery in n/a","id":"CVE-2019-6710","kev_date_added":null,"published":"2019-03-07"},{"cvss_score":8.1,"headline":"Hardcoded credentials in n/a","id":"CVE-2015-7283","kev_date_added":null,"published":"2015-12-31"},{"cvss_score":7.5,"headline":"Cross-site scripting in NBG-418N v2 firmware","id":"CVE-2023-22921","kev_date_added":null,"published":"2023-05-01"},{"cvss_score":7.5,"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22922","kev_date_added":null,"published":"2023-05-01"},{"cvss_score":6.1,"headline":"Cross-site scripting in NBG-418N v2 firmware","id":"CVE-2022-45441","kev_date_added":null,"published":"2023-02-07"},{"cvss_score":4.9,"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22924","kev_date_added":null,"published":"2023-05-01"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-01-30","vendors":["Zyxel"]},"summary":"A remote authenticated attacker can cause denial-of-service on Zyxel NBG-418N v2 routers via a format string vulnerability in the firmware.","url":"https://insights.sbomify.com/CVE-2023-22923/"}