{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-28769 exists.","fix":"No fix has been published for CVE-2023-28769 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-28769 is a critical memory corruption vulnerability in Zyxel DX5401-B0 firmware, published on 27 Apr 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-2023-28769 and fix it if it is affected.\n\nWhat it is: CVE-2023-28769 is a critical memory corruption vulnerability in Zyxel DX5401-B0 firmware, published on 27 Apr 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-2023-28769 exists.\n\nAffected product: Zyxel DX5401-B0 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-2023-28769/ (Markdown: https://insights.sbomify.com/CVE-2023-28769/index.md)","id":"CVE-2023-28769","markdown":"https://insights.sbomify.com/CVE-2023-28769/index.md","name":"CVE-2023-28769","record":{"aliases":["GHSA-xg39-26cw-gxj9"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel router firmware","requires_auth":"none","summary":"Remote unauthenticated attackers can execute OS commands or cause denial-of-service via a buffer overflow in the Zyxel DX5401-B0 web server.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"dx5401-b0_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-120","name":"Buffer Copy without Checking Size of Input"}],"description":"The buffer overflow vulnerability in the library “libclinkc.so” of the web server “zhttpd” in Zyxel DX5401-B0 firmware versions prior to V5.17(ABYO.1)C0 could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2022-02-01","github_poc":0,"max_poc_stars":null,"metasploit":1,"nuclei":0,"refs":[{"date":"2022-02-01","kind":"metasploit","ref":"exploit/linux/misc/zyxel_multiple_devices_zhttp_lan_rce","stars":null,"title":"Zyxel Unauthenticated LAN Remote Code Execution"}],"tier":"weaponised"},"has_fix":null,"headline":"Memory corruption in DX5401-B0 firmware","id":"CVE-2023-28769","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Information disclosure in DX5401-B0 firmware","id":"CVE-2023-28770"},"packages":[],"prev":{"headline":"Denial of service in XGS2220-30 firmware","id":"CVE-2023-28768"},"products":["DX5401-B0 firmware"],"published":"2023-04-27","related":[{"cvss_score":7.5,"headline":"Information disclosure in DX5401-B0 firmware","id":"CVE-2023-28770","kev_date_added":null,"published":"2023-04-27"}],"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)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-01-31","vendors":["Zyxel"]},"summary":"Remote unauthenticated attackers can execute OS commands or cause denial-of-service via a buffer overflow in the Zyxel DX5401-B0 web server.","url":"https://insights.sbomify.com/CVE-2023-28769/"}