{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7546 exists.","fix":"No fix has been published for CVE-2026-7546 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-7546 is a critical memory corruption vulnerability in Totolink NR1800X, published on 1 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-7546 and fix it if it is affected.\n\nWhat it is: CVE-2026-7546 is a critical memory corruption vulnerability in Totolink NR1800X, published on 1 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7546 exists.\n\nAffected product: Totolink NR1800X. 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-2026-7546/ (Markdown: https://insights.sbomify.com/CVE-2026-7546/index.md)","id":"CVE-2026-7546","markdown":"https://insights.sbomify.com/CVE-2026-7546/index.md","name":"CVE-2026-7546","record":{"aliases":["GHSA-jhgg-p4c8-m4gr"],"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":"none","summary":"A remote attacker can trigger a stack-based buffer overflow in the lighttpd component of Totolink NR1800X routers via the Host header, 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":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 NR1800X 9.1.0u.6279_B20210910. The impacted element is the function find_host_ip of the component lighttpd. Such manipulation of the argument Host leads to stack-based buffer overflow. The attack can be executed remotely. 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 NR1800X lighttpd find_host_ip stack-based overflow","id":"CVE-2026-7546","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":"Woosa \u003c= 2.0.5 - Authenticated (Administrator+) Arbitrary File Read via 'log_file' Parameter","id":"CVE-2026-7547"},"packages":[],"prev":{"headline":"SourceCodester Advanced School Management System checkEmail Endpoint commonController.php sql injection","id":"CVE-2026-7545"},"products":["NR1800X"],"published":"2026-05-01","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":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-01","vendors":["Totolink"]},"summary":"A remote attacker can trigger a stack-based buffer overflow in the lighttpd component of Totolink NR1800X routers via the Host header, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-7546/"}