{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7420 exists.","fix":"No fix has been published for CVE-2025-7420 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-7420 is a high-severity memory corruption vulnerability in Tenda O3V2, published on 10 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-7420 and fix it if it is affected.\n\nWhat it is: CVE-2025-7420 is a high-severity memory corruption vulnerability in Tenda O3V2, published on 10 Jul 2025. 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-2025-7420 exists.\n\nAffected product: Tenda O3V2. 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-2025-7420/ (Markdown: https://insights.sbomify.com/CVE-2025-7420/index.md)","id":"CVE-2025-7420","markdown":"https://insights.sbomify.com/CVE-2025-7420/index.md","name":"CVE-2025-7420","record":{"aliases":["GHSA-8c53-8w7h-674f"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Tenda O3V2 router","requires_auth":"low_privilege","summary":"Remote attackers can trigger a stack-based buffer overflow in the Tenda O3V2 router's httpd service via the extChannel parameter, potentially leading to code execution or denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"o3_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 O3V2 1.0.0.12(3880). It has been declared as critical. This vulnerability affects the function formWifiBasicSet of the file /goform/setWrlBasicInfo of the component httpd. The manipulation of the argument extChannel leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may 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 O3V2 httpd setWrlBasicInfo formWifiBasicSet stack-based overflow","id":"CVE-2025-7420","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":6,"next":{"headline":"Tenda O3V2 httpd operateMacFilter fromMacFilterModify stack-based overflow","id":"CVE-2025-7421"},"packages":[],"prev":{"headline":"Tenda O3V2 httpd setRateTest fromSpeedTestSet stack-based overflow","id":"CVE-2025-7419"},"products":["O3V2"],"published":"2025-07-10","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-55613","kev_date_added":null,"published":"2025-08-22"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2024-36604","kev_date_added":null,"published":"2024-06-04"},{"cvss_score":8.7,"headline":"Tenda O3V2 httpd operateMacFilter fromMacFilterModify stack-based overflow","id":"CVE-2025-7421","kev_date_added":null,"published":"2025-07-11"},{"cvss_score":8.7,"headline":"Tenda O3V2 httpd setNetworkService setAutoReboot stack-based overflow","id":"CVE-2025-7422","kev_date_added":null,"published":"2025-07-11"},{"cvss_score":8.7,"headline":"Tenda O3V2 httpd setWrlFilterList formWifiMacFilterSet stack-based overflow","id":"CVE-2025-7423","kev_date_added":null,"published":"2025-07-11"},{"cvss_score":8.7,"headline":"Tenda O3V2 httpd setSysTimeInfo fromSysToolTime stack-based overflow","id":"CVE-2025-7416","kev_date_added":null,"published":"2025-07-10"},{"cvss_score":8.7,"headline":"Tenda O3V2 httpd setPingInfo fromNetToolGet stack-based overflow","id":"CVE-2025-7417","kev_date_added":null,"published":"2025-07-10"}],"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":"2025-07-11","vendors":["Tenda"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the Tenda O3V2 router's httpd service via the extChannel parameter, potentially leading to code execution or denial of service.","url":"https://insights.sbomify.com/CVE-2025-7420/"}