{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2191 exists.","fix":"No fix has been published for CVE-2026-2191 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-2191 is a high-severity memory corruption vulnerability in Tenda Ac9 Firmware, published on 8 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-2191 and fix it if it is affected.\n\nWhat it is: CVE-2026-2191 is a high-severity memory corruption vulnerability in Tenda Ac9 Firmware, published on 8 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2191 exists.\n\nAffected product: Tenda Ac9 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-2026-2191/ (Markdown: https://insights.sbomify.com/CVE-2026-2191/index.md)","id":"CVE-2026-2191","markdown":"https://insights.sbomify.com/CVE-2026-2191/index.md","name":"CVE-2026-2191","record":{"aliases":["GHSA-j5pp-jx5r-4q45"],"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 AC9 router","requires_auth":"high_privilege","summary":"Remote attackers can trigger a stack-based buffer overflow in the Tenda AC9 router's DDoS defense list function, potentially leading to code execution or service disruption.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"ac9_firmware","vendor":"tenda"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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 weakness has been identified in Tenda AC9 15.03.06.42_multi. Affected is the function formGetDdosDefenceList. This manipulation of the argument security.ddos.map causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.","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 AC9 formGetDdosDefenceList stack-based overflow","id":"CVE-2026-2191","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"tenda:ac9_firmware","products":["tenda:ac9_firmware"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Tenda AC9 formGetRebootTimer stack-based overflow","id":"CVE-2026-2192"},"packages":[],"prev":{"headline":"itsourcecode School Management System controller.php sql injection","id":"CVE-2026-2190"},"products":["AC9"],"published":"2026-02-08","related":[{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2025-45042","kev_date_added":null,"published":"2025-05-05"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2025-44872","kev_date_added":null,"published":"2025-05-02"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2025-44877","kev_date_added":null,"published":"2025-05-02"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-45427","kev_date_added":null,"published":"2025-04-23"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-45428","kev_date_added":null,"published":"2025-04-23"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-45429","kev_date_added":null,"published":"2025-04-23"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-29384","kev_date_added":null,"published":"2025-03-14"}],"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":"2026-02-23","vendors":["Tenda"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the Tenda AC9 router's DDoS defense list function, potentially leading to code execution or service disruption.","url":"https://insights.sbomify.com/CVE-2026-2191/"}