{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19813 exists.","fix":"No fix has been published for CVE-2026-19813 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-19813 is a high-severity memory corruption vulnerability in TOTOLINK A800R, published on 14 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-19813 and fix it if it is affected.\n\nWhat it is: CVE-2026-19813 is a high-severity memory corruption vulnerability in TOTOLINK A800R, published on 14 Aug 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-2026-19813 exists.\n\nAffected product: TOTOLINK A800R. 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-2026-19813/ (Markdown: https://insights.sbomify.com/CVE-2026-19813/index.md)","id":"CVE-2026-19813","markdown":"https://insights.sbomify.com/CVE-2026-19813/index.md","name":"CVE-2026-19813","record":{"aliases":["GHSA-4f74-rpch-f3gc"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"TOTOLINK router","requires_auth":"low_privilege","summary":"Remote attackers can trigger a stack-based buffer overflow in the firewall component via the setMacFilterRules function, potentially leading to arbitrary code execution.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"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 security vulnerability has been detected in TOTOLINK A800R 4.1.2cu.5137_B20200730. This impacts the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Such manipulation of the argument Comment leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly 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":"TOTOLINK A800R firewall.so cstecgi.cgi setMacFilterRules stack-based overflow","id":"CVE-2026-19813","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"TOTOLINK A800R firewall.so cstecgi.cgi setMacQos stack-based overflow","id":"CVE-2026-19814"},"packages":[],"prev":{"headline":"TOTOLINK A800R product.so cstecgi.cgi UploadCustomModule stack-based overflow","id":"CVE-2026-19812"},"products":["A800R"],"published":"2026-08-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-08-18","vendors":["TOTOLINK"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the firewall component via the setMacFilterRules function, potentially leading to arbitrary code execution.","url":"https://insights.sbomify.com/CVE-2026-19813/"}