{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18588 exists.","fix":"No fix has been published for CVE-2026-18588 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-18588 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-2026-18588 and fix it if it is affected.\n\nWhat it is: CVE-2026-18588 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18588 exists.\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-2026-18588/ (Markdown: https://insights.sbomify.com/CVE-2026-18588/index.md)","id":"CVE-2026-18588","markdown":"https://insights.sbomify.com/CVE-2026-18588/index.md","name":"CVE-2026-18588","record":{"aliases":["GHSA-hfj9-7vrj-jwv3"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Wavlink NAS device","requires_auth":"none","summary":"Remote attackers can execute arbitrary code via a stack-based buffer overflow in the nas.cgi component of 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:X","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 has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the file nas.cgi. The manipulation of the argument CONTENT_LENGTH leads to stack-based buffer overflow. Remote exploitation of the attack is possible. You should upgrade the affected component. 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":"weaponised"},"has_fix":null,"headline":"Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow","id":"CVE-2026-18588","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 nas.cgi change_password stack-based overflow","id":"CVE-2026-18589"},"packages":[],"prev":{"headline":"Wavlink WL-NU516U1 Config Import os command injection","id":"CVE-2026-18587"},"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-03","vendors":["Wavlink"]},"summary":"Remote attackers can execute arbitrary code via a stack-based buffer overflow in the nas.cgi component of Wavlink WL-NU516U1 devices.","url":"https://insights.sbomify.com/CVE-2026-18588/"}