{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3677 exists.","fix":"No fix has been published for CVE-2026-3677 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-3677 is a high-severity memory corruption vulnerability in Tenda FH451, published on 7 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-2026-3677 and fix it if it is affected.\n\nWhat it is: CVE-2026-3677 is a high-severity memory corruption vulnerability in Tenda FH451, published on 7 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-2026-3677 exists.\n\nAffected product: Tenda FH451. 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-2026-3677/ (Markdown: https://insights.sbomify.com/CVE-2026-3677/index.md)","id":"CVE-2026-3677","markdown":"https://insights.sbomify.com/CVE-2026-3677/index.md","name":"CVE-2026-3677","record":{"aliases":["GHSA-pm9x-mf77-6wwq"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Tenda FH451 router","requires_auth":"low_privilege","summary":"Remote attackers can trigger a stack-based buffer overflow in the Tenda FH451 router via the setcfm endpoint, 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":"fh451_firmware","vendor":"tenda"}],"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 vulnerability was found in Tenda FH451 1.0.0.9. This impacts the function fromSetCfm of the file /goform/setcfm. The manipulation of the argument funcname/funcpara1 results in stack-based buffer overflow. The attack may be performed from remote. The exploit has been made public and could be used.","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":"Tenda FH451 setcfm fromSetCfm stack-based overflow","id":"CVE-2026-3677","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 FH451 AdvSetWan sub_3C434 stack-based overflow","id":"CVE-2026-3678"},"packages":[],"prev":{"headline":"There are multiple vulnerabilities in IBM DB2 bundled with IBM Application Performance Management products.","id":"CVE-2026-3676"},"products":["FH451"],"published":"2026-03-07","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-45513","kev_date_added":null,"published":"2025-05-09"},{"cvss_score":8.8,"headline":"Command injection in n/a","id":"CVE-2024-46048","kev_date_added":null,"published":"2024-09-13"},{"cvss_score":8.7,"headline":"Tenda FH451 WrlExtraSet formWrlExtraSet stack-based overflow","id":"CVE-2026-4534","kev_date_added":null,"published":"2026-03-22"},{"cvss_score":8.7,"headline":"Tenda FH451 WrlclientSet stack-based overflow","id":"CVE-2026-4535","kev_date_added":null,"published":"2026-03-22"},{"cvss_score":8.7,"headline":"Tenda FH451 AdvSetWan sub_3C434 stack-based overflow","id":"CVE-2026-3678","kev_date_added":null,"published":"2026-03-07"},{"cvss_score":8.7,"headline":"Tenda FH451 GstDhcpSetSer buffer overflow","id":"CVE-2026-2911","kev_date_added":null,"published":"2026-02-22"}],"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":"2026-03-11","vendors":["Tenda"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the Tenda FH451 router via the setcfm endpoint, potentially leading to arbitrary code execution.","url":"https://insights.sbomify.com/CVE-2026-3677/"}