{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4553 exists.","fix":"No fix has been published for CVE-2026-4553 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-4553 is a high-severity memory corruption vulnerability in Tenda F453, published on 22 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-2026-4553 and fix it if it is affected.\n\nWhat it is: CVE-2026-4553 is a high-severity memory corruption vulnerability in Tenda F453, published on 22 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-2026-4553 exists.\n\nAffected product: Tenda F453. 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-2026-4553/ (Markdown: https://insights.sbomify.com/CVE-2026-4553/index.md)","id":"CVE-2026-4553","markdown":"https://insights.sbomify.com/CVE-2026-4553/index.md","name":"CVE-2026-4553","record":{"aliases":["GHSA-7xjm-vrcp-p3wm"],"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 F453 router","requires_auth":"low_privilege","summary":"A remote stack-based buffer overflow in the Tenda F453 router's Natlimit handler allows attackers to execute arbitrary code or cause a denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"f453_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 identified in Tenda F453 1.0.0.3. Impacted is the function fromNatlimit of the file /goform/Natlimit of the component Parameters Handler. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might 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 F453 Parameters Natlimit fromNatlimit stack-based overflow","id":"CVE-2026-4553","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 F453 WriteFacMac FormWriteFacMac privilege escalation","id":"CVE-2026-4554"},"packages":[],"prev":{"headline":"Tenda F453 Parameters VirtualSer fromVirtualSer memory corruption","id":"CVE-2026-4552"},"products":["F453"],"published":"2026-03-22","related":[{"cvss_score":8.7,"headline":"Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow","id":"CVE-2026-5021","kev_date_added":null,"published":"2026-03-29"},{"cvss_score":8.7,"headline":"Tenda F453 Parameters SafeClientFilter fromSafeClientFilter memory corruption","id":"CVE-2026-4551","kev_date_added":null,"published":"2026-03-22"},{"cvss_score":8.7,"headline":"Tenda F453 Parameters VirtualSer fromVirtualSer memory corruption","id":"CVE-2026-4552","kev_date_added":null,"published":"2026-03-22"},{"cvss_score":8.7,"headline":"Tenda F453 webExcptypemanFilter fromwebExcptypemanFilter stack-based overflow","id":"CVE-2026-3726","kev_date_added":null,"published":"2026-03-08"},{"cvss_score":8.7,"headline":"Tenda F453 QuickIndex sub_3C6C0 stack-based overflow","id":"CVE-2026-3727","kev_date_added":null,"published":"2026-03-08"},{"cvss_score":8.7,"headline":"Tenda F453 setcfm fromSetCfm stack-based overflow","id":"CVE-2026-3728","kev_date_added":null,"published":"2026-03-08"}],"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":["Tenda"]},"summary":"A remote stack-based buffer overflow in the Tenda F453 router's Natlimit handler allows attackers to execute arbitrary code or cause a denial of service.","url":"https://insights.sbomify.com/CVE-2026-4553/"}