{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6906 exists.","fix":"No fix has been published for CVE-2023-6906 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-6906 is a critical memory corruption vulnerability in Totolink A7100RU, published on 18 Dec 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-2023-6906 and fix it if it is affected.\n\nWhat it is: CVE-2023-6906 is a critical memory corruption vulnerability in Totolink A7100RU, published on 18 Dec 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-2023-6906 exists.\n\nAffected product: Totolink A7100RU. 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-2023-6906/ (Markdown: https://insights.sbomify.com/CVE-2023-6906/index.md)","id":"CVE-2023-6906","markdown":"https://insights.sbomify.com/CVE-2023-6906/index.md","name":"CVE-2023-6906","record":{"aliases":[],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Totolink router","requires_auth":"none","summary":"Remote attackers can trigger a buffer overflow in the login handler of Totolink A7100RU routers, potentially leading to code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"a7100ru_firmware","vendor":"totolink"}],"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":"A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag with the input ie8 leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.","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":"Totolink A7100RU HTTP POST Request main buffer overflow","id":"CVE-2023-6906","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"codelyfe Stupid Simple CMS Deletion Interface delete.php improper authentication","id":"CVE-2023-6907"},"packages":[],"prev":{"headline":"Jahastech NxFilter Bind Request ldap injection","id":"CVE-2023-6905"},"products":["A7100RU"],"published":"2023-12-18","related":[{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2025-44655","kev_date_added":null,"published":"2025-07-21"},{"cvss_score":9.8,"headline":"Totolink A7100RU HTTP POST Request main buffer overflow","id":"CVE-2023-7095","kev_date_added":null,"published":"2023-12-25"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-33556","kev_date_added":null,"published":"2023-06-07"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-30053","kev_date_added":null,"published":"2023-05-05"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-30054","kev_date_added":null,"published":"2023-05-05"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-26848","kev_date_added":null,"published":"2023-04-07"}],"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":"2025-05-07","vendors":["Totolink"]},"summary":"Remote attackers can trigger a buffer overflow in the login handler of Totolink A7100RU routers, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2023-6906/"}