{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18589 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-18589 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-18589 is a critical memory corruption vulnerability in Wavlink WL-NU516U1, published on 3 Aug 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-2026-18589 and fix it if it is affected.\n\nWhat it is: CVE-2026-18589 is a critical memory corruption vulnerability in Wavlink WL-NU516U1, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-18589 in the wild and no public exploit code.\n\nAffected product: Wavlink WL-NU516U1. 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-2026-18589/ (Markdown: https://insights.sbomify.com/CVE-2026-18589/index.md)","id":"CVE-2026-18589","markdown":"https://insights.sbomify.com/CVE-2026-18589/index.md","name":"CVE-2026-18589","record":{"aliases":["GHSA-jfmw-hm93-c7jh"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Wavlink router","requires_auth":"none","summary":"Remote attackers can trigger a stack-based buffer overflow in the password change function to execute arbitrary code on Wavlink WL-NU516U1 devices.","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 vulnerability was found in Wavlink WL-NU516U1 708c073-mt7628. This impacts the function change_password of the file nas.cgi. The manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Wavlink WL-NU516U1 nas.cgi change_password stack-based overflow","id":"CVE-2026-18589","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":"Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os command injection","id":"CVE-2026-18590"},"packages":[],"prev":{"headline":"Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow","id":"CVE-2026-18588"},"products":["WL-NU516U1"],"published":"2026-08-03","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":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-03","vendors":["Wavlink"]},"summary":"Remote attackers can trigger a stack-based buffer overflow in the password change function to execute arbitrary code on Wavlink WL-NU516U1 devices.","url":"https://insights.sbomify.com/CVE-2026-18589/"}