{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82539 exists.","fix":"No fix has been published for CVE-2026-82539 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-82539 is a critical memory corruption vulnerability in TOTOLINK A720R, published on 30 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82539 and fix it if it is affected.\n\nWhat it is: CVE-2026-82539 is a critical memory corruption vulnerability in TOTOLINK A720R, published on 30 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82539 exists.\n\nAffected product: TOTOLINK A720R. 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-2026-82539/ (Markdown: https://insights.sbomify.com/CVE-2026-82539/index.md)","id":"CVE-2026-82539","markdown":"https://insights.sbomify.com/CVE-2026-82539/index.md","name":"CVE-2026-82539","record":{"aliases":["GHSA-54f9-jfc2-qh3v"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"TOTOLINK router","requires_auth":"high_privilege","summary":"Remote attackers can trigger memory corruption in TOTOLINK A720R routers via the MAC filtering interface, potentially leading to code execution or service disruption.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","version":"4.0"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"description":"A vulnerability was determined in TOTOLINK A720R 4.1.5cu.630_B20250509. This impacts the function setMacFilterRules of the file cstecgi.cgi of the component MAC Filtering. Executing a manipulation of the argument desc can lead to memory corruption. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-07-12","github_poc":1,"max_poc_stars":4,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-07-12T14:56:08Z","kind":"github_poc","ref":"https://github.com/Xernary/CVE-2026-82539","stars":4,"title":"Security advisory for TOTOLINK a720r buffer overflow vulnerability"}],"tier":"weaponised"},"has_fix":null,"headline":"TOTOLINK A720R MAC Filtering cstecgi.cgi setMacFilterRules memory corruption","id":"CVE-2026-82539","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":"itsourcecode Sales and Inventory System cust_searchfrm.php sql injection","id":"CVE-2026-82540"},"packages":[],"prev":{"headline":"ILIAS Arbitrary SQL Injection via Repository Trash Table Sort Parameter","id":"CVE-2026-82538"},"products":["A720R"],"published":"2026-08-30","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-01","vendors":["TOTOLINK"]},"summary":"Remote attackers can trigger memory corruption in TOTOLINK A720R routers via the MAC filtering interface, potentially leading to code execution or service disruption.","url":"https://insights.sbomify.com/CVE-2026-82539/"}