{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19812 exists.","fix":"No fix has been published for CVE-2026-19812 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-19812 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-2026-19812 and fix it if it is affected.\n\nWhat it is: CVE-2026-19812 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-2026-19812 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-2026-19812/ (Markdown: https://insights.sbomify.com/CVE-2026-19812/index.md)","id":"CVE-2026-19812","markdown":"https://insights.sbomify.com/CVE-2026-19812/index.md","name":"CVE-2026-19812","record":{"aliases":["GHSA-8w2r-9wr9-7g8j"],"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 TOTOLINK A800R router via the UploadCustomModule function, potentially leading to 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 weakness has been identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component product.so. This manipulation of the argument File causes stack-based buffer overflow. The attack is possible to be carried out 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":"TOTOLINK A800R product.so cstecgi.cgi UploadCustomModule stack-based overflow","id":"CVE-2026-19812","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 setMacFilterRules stack-based overflow","id":"CVE-2026-19813"},"packages":[],"prev":{"headline":"TOTOLINK A800R firewall.so cstecgi.cgi setIpQosRules stack-based overflow","id":"CVE-2026-19811"},"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":"2026-08-14","vendors":["TOTOLINK"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the TOTOLINK A800R router via the UploadCustomModule function, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-19812/"}