{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4566 exists.","fix":"No fix has been published for CVE-2026-4566 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-4566 is a high-severity memory corruption vulnerability in Belkin F9K1122, published on 23 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-4566 and fix it if it is affected.\n\nWhat it is: CVE-2026-4566 is a high-severity memory corruption vulnerability in Belkin F9K1122, published on 23 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4566 exists.\n\nAffected product: Belkin F9K1122. 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-2026-4566/ (Markdown: https://insights.sbomify.com/CVE-2026-4566/index.md)","id":"CVE-2026-4566","markdown":"https://insights.sbomify.com/CVE-2026-4566/index.md","name":"CVE-2026-4566","record":{"aliases":["GHSA-9c76-c4x3-j7c2"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Belkin wireless router","requires_auth":"low_privilege","summary":"Remote attackers can trigger a stack-based buffer overflow in the Belkin F9K1122 router's WISP configuration interface, potentially leading to arbitrary code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"f9k1122_firmware","vendor":"belkin"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"},{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A flaw has been found in Belkin F9K1122 1.00.33. The affected element is the function formWISP5G of the file /goform/formWISP5G. Executing a manipulation of the argument webpage can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been published and may be used. 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":"Belkin F9K1122 formWISP5G stack-based overflow","id":"CVE-2026-4566","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Tenda A15 UploadCfg stack-based overflow","id":"CVE-2026-4567"},"packages":[],"prev":{"headline":"Tenda AC21 SetNetControlList formSetQosBand buffer overflow","id":"CVE-2026-4565"},"products":["F9K1122"],"published":"2026-03-23","related":[{"cvss_score":8.7,"headline":"Belkin F9K1122 formWlanSetup stack-based overflow","id":"CVE-2026-5608","kev_date_added":null,"published":"2026-04-06"},{"cvss_score":8.7,"headline":"Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow","id":"CVE-2026-5042","kev_date_added":null,"published":"2026-03-29"},{"cvss_score":8.7,"headline":"Belkin F9K1122 Parameter formSetPassword stack-based overflow","id":"CVE-2026-5043","kev_date_added":null,"published":"2026-03-29"},{"cvss_score":8.7,"headline":"Belkin F9K1122 Setting formSetSystemSettings stack-based overflow","id":"CVE-2026-5044","kev_date_added":null,"published":"2026-03-29"},{"cvss_score":8.7,"headline":"Belkin F9K1122 webs formWpsStart stack-based overflow","id":"CVE-2025-7084","kev_date_added":null,"published":"2025-07-06"},{"cvss_score":8.7,"headline":"Belkin F9K1122 webs formiNICWpsStart stack-based overflow","id":"CVE-2025-7085","kev_date_added":null,"published":"2025-07-06"}],"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-23","vendors":["Belkin"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the Belkin F9K1122 router's WISP configuration interface, potentially leading to arbitrary code execution.","url":"https://insights.sbomify.com/CVE-2026-4566/"}